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Full vulnerability report · 2026
CVE-2026-95300High confidence

Google Chrome: Missing Authorization

Google · Chrome

4.8MediumCVSS 3.1
Recommended action
Within 7 days

Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityMediumOperational priority:High, raised one band.upgradedsince 30 Sep 2026

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • A structured source references public exploit or proof-of-concept material.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 0.24% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs Google Chrome and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  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 30 daysRemediation target: Within 180 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.

Distribution package intelligence

Release-specific package status

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

4 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 · sourcechromiumVendor fix publishedDebian records a fixed source-package version for this release.154.0.8037.57-1~deb13u1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourcechromiumVendor fix publishedDebian records a fixed source-package version for this release.154.0.8037.57-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourcechromiumVendor fix publishedDebian records a fixed source-package version for this release.154.0.8037.57-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourcechromiumVendor fix publishedDebian records a fixed source-package version for this release.154.0.8037.57-1Debian Security Tracker ↗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.

2 current
CVE-2026-95300 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitychromium-browser: Missing authorization in DevTools
1 known not affected

The vendor explicitly states that these products are not affected by this CVE.

  • All currently supported Red Hat products
Summary
A flaw was found in chromium-browser. Due to missing authorization checks in the DevTools component, a remote attacker could bypass system access restrictions. To exploit this flaw, the attacker must leverage social engineering techniques in conjunction with crafted network traffic.
Remediation
No remediation text is recorded.
CVE-2026-95300 · CSAF 2.0 · revision 3 · interimSUSE Product Security TeamCVE-2026-95300
2 recommended

The vendor recommends these product versions as the target state.

  • chromedriver-154.0.8037.57-1.1 as component of openSUSE Tumbleweed
  • chromium-154.0.8037.57-1.1 as component of openSUSE Tumbleweed
Summary
Missing authorization in DevTools in Google Chrome prior to 154.0.8037.57 allowed a remote attacker leveraging social engineering to bypass system access restrictions via crafted network traffic. (Chromium security severity: Medium)
Remediation
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
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-2026-89135

No EUVD known-exploited evidence

Missing authorization in DevTools in Google Chrome prior to 154.0.8037.57 allowed a remote attacker leveraging social engineering to bypass system access restrictions via crafted network traffic. (Chromium security severity: Medium)

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
4.8 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

Missing authorization in DevTools in Google Chrome prior to 154.0.8037.57 allowed a remote attacker leveraging social engineering to bypass system access restrictions via crafted network traffic. (Chromium security severity: Medium)

What

Missing authorization in DevTools in Google Chrome prior to 154.0.8037.57 allowed a remote attacker leveraging social engineering to bypass system access restrictions via crafted network traffic. (Chromium security severity: Medium)

Why

The application reaches a protected operation without first confirming that the requester is authorised.

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

Missing authorization in DevTools in Google Chrome prior to 154.0.8037.57 allowed a remote attacker leveraging social engineering to bypass system access restrictions via crafted network traffic. (Chromium security severity: Medium)

Why

The application reaches a protected operation without first confirming that the requester is authorised.

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.
Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path
a network path → Missing Authorization → 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: a standard category for the underlying weakness.
CWE-862 ↗

CWE-862: Missing Authorization. The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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:L/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.CLowConfidentiality impact: A successful attack can cause a limited loss.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.
NetworkUnauthenticatedCWE-862Public exploit reference
A

Official authority intelligence

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

ENISA EUVD · EUVD-2026-89135Official EUVD mapping

Missing authorization in DevTools in Google Chrome prior to 154.0.8037.57 allowed a remote attacker leveraging social engineering to bypass system access restrictions via crafted network traffic. (Chromium security severity: Medium)

Official EUVD record ↗
BSI · German · WID-SEC-2026-3514Google Chrome / Microsoft Edge: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Google Chrome / Microsoft Edge ausnutzen, um möglicherweise beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, Daten offenzulegen oder zu manipulieren, Spoofing-Angriffe durchzuführen oder Denial-of-Service-Zustände herbeizuführen.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1213Multiples vulnérabilités dans Google Chrome

d?id=CVE-2026-95291 Référence CVE CVE-2026-95292 https://www.cve.org/CVERecord?id=CVE-2026-95292 Référence CVE CVE-2026-95293 https://www.cve.org/CVERecord?id=CVE-2026-95293 Référence CVE CVE-2026-95294 https://www.cve.org/CVERecord?id=CVE-2026-95294 Référence CVE CVE-2026-95295 https://www.cve.org/CVERecord?id=CVE-2026-95295 Référence CVE CVE-2026-95296 https://www.cve.org/CVERecord?id=CVE-2026-95296 Référence CVE CVE-2026-95297 https://www.cve.org/CVERecord?id=CVE-2026-95297 Référence CVE CVE-2026-95298 https://www.cve.org/CVERecord?id=CVE-2026-95298 Référence CVE CVE-2026-95299 https://www.cve.org/CVERecord?id=CVE-2026-95299 Référence CVE CVE-2026-95300 https://www.cve.org/CVERecord?id=CVE-2026-95300 Référence CVE CVE-2026-95301 https://www.cve.org/CVERecord?id=CVE-2026-95301 Référence CVE CVE-2026-95302 https://www.cve.org/CVERecord?id=CVE-2026-95302 Référence CVE CVE-2026-95303 https://www.cve.org/CVERecord?id=CVE-2026-95303 Référence CVE CVE-2026-95304 https://www.cve.org/CVERecord?id=CVE-2026-95304 Référence CVE CVE-2026-95305 https://www.cve.org/CVERecord?id=CVE-2026-95305 Référence CVE CVE-2026-95306 https://www.cve.org/CVERecord?id=CVE-2026-95306 Référence CVE CVE-2026-95307 https://www.cve.org/CVERecord?id=CVE-2026-95307 Référence CVE CVE-2026-95308 https://www.cve.org/CVERecord?id=

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-036396GoogleのGoogle Chromeにおける認証の欠如に関する脆弱性

154.0.8037.57 未満の Google Chrome の DevTools には認可の欠如があり、そのためリモート攻撃者がソーシャルエンジニアリングを悪用して細工されたネットワークトラフィックを介し、システムのアクセス制限を回避できる可能性がありました。（Chromium セキュリティの重大度は中です）

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.
Patch available
Affected
Chrome: 154.0.8037.57 < 154.0.8037.57
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Workaround
A mitigation or workaround reference is available from the source linked below; validate it against the affected product and version.
Official vendor articles1 stored document

Linked articles are downloaded and versioned as source evidence. A CVE mention or approved update relationship does not, by itself, verify a fix for every product branch.

  • Chrome Releases: Stable Channel Update for Desktop →Original publisher ↗Searchable text snapshot · Captured 26 Sep 2026Chrome Releases Release updates from the Chrome team Stable Channel Update for Desktop Tuesday, September 22, 2026 The Chrome team is delighted to announce the promotion of Chrome 154 to the stable channel for Windows, Mac and Linux. This will roll out over the coming days/weeks. Chrome 154.0.8037.57 (Linux) 154.0.803
04

Evidence and provenance

Published 29 Sept 2026 · Last source change 30 Sept 2026, 20:11 UTC · CWE-862 · Missing Authorization

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 2026-09-30
European sourceENISA EUVD · EUVD-2026-89135
Product sourceCNA
Remediation sourceVendor CSAF · SUSE Product Security Team
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. Vendor guidanceAuthoritative vendor guidance changed: added mitigation: issues.chromium.org/545449081; added remediation: issues.chromium.org/545449081; removed remediation: suse.com/CVE-2026-95300; 1 further additions.
    Before
    remediation: suse.com/CVE-2026-95300
    After
    mitigation: issues.chromium.org/545449081 · remediation: issues.chromium.org/545449081 · vendor advisory: chromereleases.googleblog.com/stable-channel-update-for-desktop_0856730748.html
    chrome-cve-admin@google.com ↗
  2. Public exploit evidencePublic exploit evidence changed from No public exploit to Public exploit reference.
    Before
    No public exploit
    After
    Public exploit reference
    chrome-cve-admin@google.com ↗
  3. Vendor guidanceAuthoritative vendor guidance changed: removed remediation: suse.com/CVE-2026-95300.
    Before
    remediation: suse.com/CVE-2026-95300
    After
    no authoritative guidance recorded
    CNA ↗
  4. Remediation statusRemediation status changed from Mitigation available to Awaiting fix.
    Before
    Mitigation available
    After
    Awaiting fix
    CNA ↗
  5. SeveritySeverity changed from Unknown to Medium.
    Before
    Unknown
    After
    Medium
    CISA ADP ↗
  6. CVSS scoreCVSS score changed from not recorded to 4.8 (CVSS 3.1 · CISA ADP · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N).
    Before
    not recorded
    After
    4.8 (CVSS 3.1 · CISA ADP · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N)
    CISA ADP ↗
  7. ENISA EUVD mappingEUVD-2026-89135 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2026-89135"}
    ENISA EUVD ↗
  8. Remediation statusRemediation status changed from Awaiting fix to Mitigation available.
    Before
    Awaiting fix
    After
    Mitigation available
    SUSE Product Security Team ↗
  9. Vendor guidanceAuthoritative vendor guidance changed: removed patch: chromereleases.googleblog.com/stable-channel-update-for-desktop_0856730748.html; removed remediation: chromereleases.googleblog.com/stable-channel-update-for-desktop_0856730748.html.
    Before
    patch: chromereleases.googleblog.com/stable-channel-update-for-desktop_0856730748.html · remediation: chromereleases.googleblog.com/stable-channel-update-for-desktop_0856730748.html
    After
    no authoritative guidance recorded
    CNA ↗
  10. Affected versionsThe structured affected or fixed version information changed.
    Before
    Google Chrome desktop releases before the fixed versions in the linked Stable Channel advisory. · Fixed: Google Chrome stable desktop release: 154.0.8037.57 (Linux) 154.0.8037.57/.58 Windows/Mac.
    After
    Chrome: 154.0.8037.57 < 154.0.8037.57 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  11. Remediation statusRemediation status changed from Patch available to Awaiting fix.
    Before
    Patch available
    After
    Awaiting fix
    CNA ↗
  12. SeveritySeverity changed from Medium to Unknown.
    Before
    Medium
    After
    Unknown
    CVE.org ↗
  13. Catalogue recordCVE added to the BlackTree catalogue.
    Authoritative vendor advisory ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Mitigation reference recorded
ENISA EUVD · EUVD-2026-89135↗Vendor CSAF · SUSE Product Security Team↗CVE authority or vendor reference↗Public exploit 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-2026-95300 · cve.blacktree.nl