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Full vulnerability report · 2026
CVE-2026-59283High confidence

Spring Framework Safety Guard Bypass via SpEL Expression Compilation

Spring · Spring Framework

9.1CriticalCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded. Verified remediation exists for at least one product or source, but 10 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityCriticalOperational priority:Critical, 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 0.55% for the current model date.

Compensating controls

  • Apply the linked authoritative mitigation while planning the permanent fix.
  • 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 Spring Spring Framework 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: Within 3 daysRemediation target: Within 90 days

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.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 10 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

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.

5 package states
Package result overrides the generic status

BlackTree has verified remediation for at least one product or source, but the relevant distribution still reports no fixed package for 4 affected package states shown here. Treat those rows as affected with no fix until that distribution publishes a fixed version.

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 · sourcelibspring-javaAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourcelibspring-javaAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourcelibspring-javaAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourcelibspring-javaAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · esm-appslibspring-javaUnder evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 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.

1 current
CVE-2026-59283 · CSAF 2.0 · revision 3 · finalRed Hat Product Securityorg.springframework:spring-expression: Spring Framework: Safety Guard Bypass via SpEL Expression Compilation
6 known affected

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

  • jenkins.src as a component of OpenShift Developer Tools and Services
  • ocp-tools-4/jenkins-rhel8 as a component of OpenShift Developer Tools and Services
  • ocp-tools-4/jenkins-rhel9 as a component of OpenShift Developer Tools and Services
  • spring-expression as a component of Red Hat build of Apache Camel - HawtIO 4
  • devspaces/openvsx-rhel9 as a component of Red Hat OpenShift Dev Spaces
  • devspaces/pluginregistry-rhel9 as a component of Red Hat OpenShift Dev Spaces
Summary
A flaw was found in Spring Framework. Applications that evaluate Spring Expression Language (SpEL) expressions using SimpleEvaluationContext may be vulnerable to a safety guard bypass when the SpEL expression compiler is active. This could allow an attacker to circumvent security restrictions, potentially leading to unauthorized actions within the application.
Remediation
Disable SpEL compilation globally by setting the system property `spring.expression.compiler.mode` or configuration bean setting to `OFF`. Alternatively, restrict SpEL expression input to trusted internal sources and avoid parsing untrusted user-supplied strings via `SimpleEvaluationContext`.
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-2026-67172

No EUVD known-exploited evidence

Applications that evaluate Spring Expression Language (SpEL) expressions using SimpleEvaluationContext may be vulnerable to a safety guard bypass when the SpEL expression compiler is active. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28 Spring Framework 6.0.0 - 6.0.30 Spring Framework 5.3.0 - 5.3.49 Spring Framework 5.2.25.RELEASE and earlier

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
9.1 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionPatch only the product branches with a verified fix

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded. Verified remediation exists for at least one product or source, but 10 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
01

What, why and how

Applications that evaluate Spring Expression Language (SpEL) expressions using SimpleEvaluationContext may be vulnerable to a safety guard bypass when the SpEL expression compiler is active. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28 Spring Framework 6.0.0 - 6.0.30 Spring Framework 5.3.0 - 5.3.49 Spring Framework 5.2.25.RELEASE and earlier

What

Applications that evaluate Spring Expression Language (SpEL) expressions using SimpleEvaluationContext may be vulnerable to a safety guard bypass when the SpEL expression compiler is active. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28 Spring Framework 6.0.0 - 6.0.30 Spring Framework 5.3.0 - 5.3.49 Spring Framework 5.2.25.RELEASE and earlier

Why

The product does not properly restrict reading from or writing to dynamically-managed code resources such as variables, objects, classes, attributes, functions, or executable instructions or statements.

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

Applications that evaluate Spring Expression Language (SpEL) expressions using SimpleEvaluationContext may be vulnerable to a safety guard bypass when the SpEL expression compiler is active. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28 Spring Framework 6.0.0 - 6.0.30 Spring Framework 5.3.0 - 5.3.49 Spring Framework 5.2.25.RELEASE and earlier

Why

The product does not properly restrict reading from or writing to dynamically-managed code resources such as variables, objects, classes, attributes, functions, or executable instructions or statements.

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 → Improper Control of Dynamically-Managed Code Resources → 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
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-913 ↗

CWE-913: Improper Control of Dynamically-Managed Code Resources. The product does not properly restrict reading from or writing to dynamically-managed code resources such as variables, objects, classes, attributes, functions, or executable instructions or statements.

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:L/PR:N/UI:N/S:U/C:N/I:H/A:H

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.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.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.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
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.
NetworkUnauthenticatedCWE-913
A

Official authority intelligence

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

ENISA EUVD · EUVD-2026-67172Official EUVD mapping

Applications that evaluate Spring Expression Language (SpEL) expressions using SimpleEvaluationContext may be vulnerable to a safety guard bypass when the SpEL expression compiler is active. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28 Spring Framework 6.0.0 - 6.0.30 Spring Framework 5.3.0 - 5.3.49 Spring Framework 5.2.25.RELEASE and earlier

Official EUVD record ↗
BSI · German · WID-SEC-2026-2955VMware Tanzu Spring Framework: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in VMware Tanzu Spring Framework ausnutzen, um beliebigen Code auszuführen, Cross-Site-Scripting-Angriffe durchzuführen, Sicherheitsmaßnahmen zu umgehen, sensible Informationen offenzulegen, offene Weiterleitungen durchzuführen, Daten zu manipulieren oder Denial-of-Service-Zustände zu verursachen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260902Security Bulletin 2 Sept 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 2 Sept 2026, published on 2 September 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-031527VMwareのSpring Frameworkにおける動的に操作されるコードリソースの不適切な制御に関する脆弱性

SimpleEvaluationContext を使用して Spring Expression Language (SpEL) 式を評価するアプリケーションは、SpEL 式コンパイラが有効になっている場合にセーフティガードをバイパスされる可能性があります。影響を受けるバージョンは以下の通りです。Spring Framework 7.0.0 から 7.0.8、Spring Framework 6.2.0 から 6.2.19、Spring Framework 6.1.0 から 6.1.28、Spring Framework 6.0.0 から 6.0.30、Spring Framework 5.3.0 から 5.3.49、Spring Framework 5.2.25.RELEASE およびそれ以前のバージョンです。

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 availability varies by product
Affected
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
Workaround
Disable SpEL compilation globally by setting the system property `spring.expression.compiler.mode` or configuration bean setting to `OFF`. Alternatively, restrict SpEL expression input to trusted internal sources and avoid parsing untrusted user-supplied strings via `SimpleEvaluationContext`.
04

Evidence and provenance

Published 27 Aug 2026 · Last source change 28 Aug 2026, 18:40 UTC · CWE-913 · Improper Control of Dynamically-Managed Code Resources

CVE recordCVE.org · 5.2
CVSS sourceCISA ADP
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-28
European sourceENISA EUVD · EUVD-2026-67172
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    jenkins.src as a component of OpenShift Developer Tools and Services; ocp-tools-4/jenkins-rhel8 as a component of OpenShift Developer Tools and Services; ocp-tools-4/jenkins-rhel9 as a component of OpenShift Developer Tools and Services; spring-expression as a component of Red Hat build of Apache Camel - HawtIO 4; org.apache.servicemix.bundles.spring-expression as a component of Red Hat Fuse 7; spring-expression as a component of Red Hat Fuse 7; devspaces/openvsx-rhel9 as a component of Red Hat OpenShift Dev Spaces; devspaces/pluginregistry-rhel9 as a component of Red Hat OpenShift Dev Spaces
    After
    jenkins.src as a component of OpenShift Developer Tools and Services; ocp-tools-4/jenkins-rhel8 as a component of OpenShift Developer Tools and Services; ocp-tools-4/jenkins-rhel9 as a component of OpenShift Developer Tools and Services; spring-expression as a component of Red Hat build of Apache Camel - HawtIO 4; devspaces/openvsx-rhel9 as a component of Red Hat OpenShift Dev Spaces; devspaces/pluginregistry-rhel9 as a component of Red Hat OpenShift Dev Spaces
    Red Hat Product Security ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    jenkins.src as a component of OpenShift Developer Tools and Services; ocp-tools-4/jenkins-rhel8 as a component of OpenShift Developer Tools and Services; ocp-tools-4/jenkins-rhel9 as a component of OpenShift Developer Tools and Services; spring-expression as a component of Red Hat build of Apache Camel - HawtIO 4; spring-expression as a component of Red Hat build of Apache Camel 4 for Quarkus 3; org.apache.servicemix.bundles.spring-expression as a component of Red Hat Fuse 7; spring-expression as a component of Red Hat Fuse 7; devspaces/openvsx-rhel9 as a component of Red Hat OpenShift Dev Spaces; devspaces/pluginregistry-rhel9 as a component of Red Hat OpenShift Dev Spaces
    After
    jenkins.src as a component of OpenShift Developer Tools and Services; ocp-tools-4/jenkins-rhel8 as a component of OpenShift Developer Tools and Services; ocp-tools-4/jenkins-rhel9 as a component of OpenShift Developer Tools and Services; spring-expression as a component of Red Hat build of Apache Camel - HawtIO 4; org.apache.servicemix.bundles.spring-expression as a component of Red Hat Fuse 7; spring-expression as a component of Red Hat Fuse 7; devspaces/openvsx-rhel9 as a component of Red Hat OpenShift Dev Spaces; devspaces/pluginregistry-rhel9 as a component of Red Hat OpenShift Dev Spaces
    Red Hat Product Security ↗
  3. Vendor guidanceAuthoritative vendor guidance changed: added vendor advisory: spring.io/cve-2026-59283.
    Before
    no authoritative guidance recorded
    After
    vendor advisory: spring.io/cve-2026-59283
    security@vmware.com ↗
  4. SeveritySeverity changed from Unknown to Critical.
    Before
    Unknown
    After
    Critical
    CISA ADP ↗
  5. CVSS scoreCVSS score changed from not recorded to 9.1 (CVSS 3.1 · CISA ADP · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H).
    Before
    not recorded
    After
    9.1 (CVSS 3.1 · CISA ADP · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H)
    CISA ADP ↗
  6. ENISA EUVD mappingEUVD-2026-67172 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2026-67172"}
    ENISA EUVD ↗
  7. 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-2026-67172↗Vendor CSAF · Red Hat Product Security↗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-2026-59283 · cve.blacktree.nl