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Full vulnerability report · 2026
CVE-2026-91461High confidence

Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE)

Oracle Corporation · Oracle Java SE

3.7LowCVSS 3.1
Recommended action
Scheduled

Low technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityLowOperational priority:Low, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 0.20% for the current model date.

Compensating controls

  • Restrict the affected network interface to trusted sources where business-safe.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Oracle Corporation Oracle Java SE and falls inside the recorded affected range.
  2. Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: No default targetRemediation target: Normal maintenance

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Distribution package intelligence

Release-specific package status

Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

17 package states
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Debian trixietrixie · sourceopenjdk-21Affected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 23 Oct 2026
Debian trixietrixie · sourceopenjdk-25Affected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 23 Oct 2026
Debian bookwormbookworm · sourceopenjdk-17Affected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 23 Oct 2026
Debian forkyforky · sourceopenjdk-21Affected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 23 Oct 2026
Debian forkyforky · sourceopenjdk-25Affected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 23 Oct 2026
Debian forkyforky · sourceopenjdk-27Affected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 23 Oct 2026
Debian sidsid · sourceopenjdk-11Affected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 23 Oct 2026
Debian sidsid · sourceopenjdk-17Vendor fix publishedDebian records a fixed source-package version for this release.17.0.21+9-1Debian Security Tracker ↗Source updated 23 Oct 2026
Debian sidsid · sourceopenjdk-21Vendor fix publishedDebian records a fixed source-package version for this release.21.0.13+9-1Debian Security Tracker ↗Source updated 23 Oct 2026
Debian sidsid · sourceopenjdk-25Vendor fix publishedDebian records a fixed source-package version for this release.25.0.5+8-1Debian Security Tracker ↗Source updated 23 Oct 2026
Debian sidsid · sourceopenjdk-27Vendor fix publishedDebian records a fixed source-package version for this release.27.0.1+9-1Debian Security Tracker ↗Source updated 23 Oct 2026
Debian sidsid · sourceopenjdk-8Affected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 23 Oct 2026
Ubuntu 24.04 LTSnoble · esm-appsopenjdk-ltsUnder evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 23 Oct 2026
Ubuntu 24.04 LTSnoble · standard archiveopenjdk-17Under evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 23 Oct 2026
Ubuntu 24.04 LTSnoble · standard archiveopenjdk-21Under evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 23 Oct 2026
Ubuntu 24.04 LTSnoble · standard archiveopenjdk-25Under evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 23 Oct 2026
Ubuntu 24.04 LTSnoble · standard archiveopenjdk-8Under evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 23 Oct 2026
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

2 current
CVE-2026-91461 · CSAF 2.0 · revision 2 · interimSUSE Product Security TeamCVE-2026-91461
600 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • java-21-openjdk as component of SUSE Linux Enterprise Desktop 15 SP7
  • java-21-openjdk-demo as component of SUSE Linux Enterprise Desktop 15 SP7
  • java-21-openjdk-devel as component of SUSE Linux Enterprise Desktop 15 SP7
  • java-21-openjdk-headless as component of SUSE Linux Enterprise Desktop 15 SP7
  • java-25-openjdk as component of SUSE Linux Enterprise Desktop 15 SP7
  • java-25-openjdk-demo as component of SUSE Linux Enterprise Desktop 15 SP7
  • java-25-openjdk-devel as component of SUSE Linux Enterprise Desktop 15 SP7
  • java-25-openjdk-headless as component of SUSE Linux Enterprise Desktop 15 SP7
  • java-11-openjdk as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • java-11-openjdk-demo as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • java-11-openjdk-devel as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • java-11-openjdk-headless as component of SUSE Linux Enterprise High Performance Computing 12 SP5
Summary
unknown
Remediation
No remediation text is recorded.
CVE-2026-91461 · CSAF 2.0 · revision 3 · finalRed Hat Product Securityopenjdk: Enhance TLS Extensions (Oracle CPU 2026-10)
299 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • java-1.8.0-openjdk-portable.src as a component of Red Hat build of OpenJDK 1.8
  • java-1.8.0-openjdk-windows.src as a component of Red Hat build of OpenJDK 1.8
  • java-11-openjdk-portable.src as a component of Red Hat build of OpenJDK 11 ELS
  • java-11-openjdk-windows.src as a component of Red Hat build of OpenJDK 11 ELS
  • java-11-openjdk.src as a component of Red Hat build of OpenJDK 11 ELS
  • java-17-openjdk-portable.src as a component of Red Hat build of OpenJDK 17
  • java-17-openjdk-windows.src as a component of Red Hat build of OpenJDK 17
  • java-21-openjdk-portable.src as a component of Red Hat build of OpenJDK 21
  • java-21-openjdk-windows.src as a component of Red Hat build of OpenJDK 21
  • java-25-openjdk-portable.src as a component of Red Hat build of OpenJDK 25
  • java-25-openjdk-windows.src as a component of Red Hat build of OpenJDK 25
  • java-21-ibm-semeru-certified-jdk as a component of Red Hat Enterprise Linux 10
Summary
A flaw was found in the Java Secure Socket Extension (JSSE) component. An unauthenticated remote attacker could exploit this vulnerability over Transport Layer Security (TLS) by sending crafted data to affected application programming interfaces (APIs). A successful attack allows the attacker to cause unauthorized modification, insertion, or deletion of accessible data.
Remediation
Affected
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-106709

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Low technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified
01

What, why and how

Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE). Supported versions that are affected are Oracle Java SE: 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27; Oracle GraalVM for JDK: 17.0.20.1 and 21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via TLS to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.1 Base Score 3.7 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N).

What

Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE). Supported versions that are affected are Oracle Java SE: 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27; Oracle GraalVM for JDK: 17.0.20.1 and 21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via TLS to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.1 Base Score 3.7 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N).

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE). Supported versions that are affected are Oracle Java SE: 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27; Oracle GraalVM for JDK: 17.0.20.1 and 21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via TLS to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.1 Base Score 3.7 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N).

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → vulnerable operation → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
High: exploitation depends on specific conditions
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration.
CWE not yet assigned
CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.ILowIntegrity impact: A successful attack can cause a limited loss.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticated
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-2026-4079Oracle Java SE: Mehrere Schwachstellen

Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Oracle Java SE ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1350Avis du CERT-FR

d?id=CVE-2026-91409 Référence CVE CVE-2026-91410 https://www.cve.org/CVERecord?id=CVE-2026-91410 Référence CVE CVE-2026-91411 https://www.cve.org/CVERecord?id=CVE-2026-91411 Référence CVE CVE-2026-91415 https://www.cve.org/CVERecord?id=CVE-2026-91415 Référence CVE CVE-2026-91417 https://www.cve.org/CVERecord?id=CVE-2026-91417 Référence CVE CVE-2026-91418 https://www.cve.org/CVERecord?id=CVE-2026-91418 Référence CVE CVE-2026-91451 https://www.cve.org/CVERecord?id=CVE-2026-91451 Référence CVE CVE-2026-91452 https://www.cve.org/CVERecord?id=CVE-2026-91452 Référence CVE CVE-2026-91453 https://www.cve.org/CVERecord?id=CVE-2026-91453 Référence CVE CVE-2026-91461 https://www.cve.org/CVERecord?id=CVE-2026-91461 Référence CVE CVE-2026-91462 https://www.cve.org/CVERecord?id=CVE-2026-91462 Référence CVE CVE-2026-91463 https://www.cve.org/CVERecord?id=CVE-2026-91463 Référence CVE CVE-2026-91464 https://www.cve.org/CVERecord?id=CVE-2026-91464 Référence CVE CVE-2026-91477 https://www.cve.org/CVERecord?id=CVE-2026-91477 Référence CVE CVE-2026-91484 https://www.cve.org/CVERecord?id=CVE-2026-91484 Référence CVE CVE-2026-91487 https://www.cve.org/CVERecord?id=CVE-2026-91487 Gestion détaillée du document Date Description 21 octobre 2026 Version initiale Haut de page Accédez au portail authentifié du CERT-FR (Clu

Official advisory ↗
NCSC-NL · Dutch · NCSC-2026-0449Meerdere kwetsbaarheden verholpen in Oracle Java

A vulnerability in Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition allows unauthenticated network attackers via TLS to perform unauthorized data modification operations, with a CVSS 3.1 score of 3.7.

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix not verified
Affected
  • java-21-openjdk as component of SUSE Linux Enterprise Desktop 15 SP7
  • java-21-openjdk-demo as component of SUSE Linux Enterprise Desktop 15 SP7
  • java-21-openjdk-devel as component of SUSE Linux Enterprise Desktop 15 SP7
  • java-21-openjdk-headless as component of SUSE Linux Enterprise Desktop 15 SP7
  • java-25-openjdk as component of SUSE Linux Enterprise Desktop 15 SP7
  • java-25-openjdk-demo as component of SUSE Linux Enterprise Desktop 15 SP7
  • java-25-openjdk-devel as component of SUSE Linux Enterprise Desktop 15 SP7
  • java-25-openjdk-headless as component of SUSE Linux Enterprise Desktop 15 SP7
  • java-11-openjdk as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • java-11-openjdk-demo as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • java-11-openjdk-devel as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • java-11-openjdk-headless as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • java-1_8_0-ibm as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • java-1_8_0-ibm-alsa as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • java-1_8_0-ibm-devel as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • java-1_8_0-ibm-plugin as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • java-1_8_0-openjdk as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • java-1_8_0-openjdk-demo as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • java-1_8_0-openjdk-devel as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • java-1_8_0-openjdk-headless as component of SUSE Linux Enterprise High Performance Computing 12 SP5
  • java-11-openjdk as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • java-11-openjdk-demo as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • java-11-openjdk-devel as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • java-11-openjdk-headless as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • java-1_8_0-ibm as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • java-1_8_0-ibm-alsa as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • java-1_8_0-ibm-devel as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • java-1_8_0-ibm-plugin as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • java-1_8_0-openjdk as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • java-1_8_0-openjdk-demo as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • and 570 more
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 20 Oct 2026 · Last source change 20 Oct 2026, 21:26 UTC · CWE not yet assigned

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-10-21
European sourceENISA EUVD · EUVD-2026-106709
Product sourceVendor CSAF · SUSE Product Security Team
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceUnavailable
NVD statusNVD awaiting enrichment

Missing structured fields: CWE classification. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates ↗
  1. ENISA EUVD mappingEUVD-2026-106709 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2026-106709"}
    ENISA EUVD ↗
  2. Vendor guidanceAuthoritative vendor guidance changed: removed vendor advisory: oracle.com/cpuoct2026.html.
    Before
    vendor advisory: oracle.com/cpuoct2026.html
    After
    no authoritative guidance recorded
    CNA ↗
  3. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2026-106709↗Vendor CSAF · SUSE Product Security Team↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-91461 · cve.blacktree.nl