ChromeWeb browser · Google
CVE-2026-11308
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedInappropriate implementation in Extensions in Google Chrome prior to 149.0.7827.53 allowed an attacker who convinced a user to install a malicious extension to perform privilege escalation via a crafted Chrome Extension. (Chromium security severity: Low)
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceGoogle Chrome versions prior to 149.0.7827.53 contain an inappropriately implemented extension API that allows a malicious extension, once installed through user social engineering, to escalate its privileges beyond what should be permitted for that extension's declared permissions.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data
ChromeWeb browser
< 149.0.7827.53CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check installed Chrome versionNavigate to chrome://settings/help or use the menu Help > About Google Chrome to view the current version numberAffected if Version is less than 149.0.7827.53 (e.g., 149.x.x.x with lower build, or any version in the 148.x or earlier branch)
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Review installed extensionsNavigate to chrome://extensions/ and enable Developer mode to see extension IDs and sources. Review the list for any extensions you do not recognize or did not intentionally installAffected if Any unknown, untrusted, or unintentionally installed extensions are present in the browser
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Check for extensions from suspicious sourcesInspect each extension's ID and source. Look for extensions installed from third-party websites, especially those with generic names or that request excessive permissionsAffected if Extensions are installed from untrusted or unfamiliar sources, particularly those with broad permissions
You are affected if your Chrome version is below 149.0.7827.53 AND you have a malicious extension installed by an attacker that is attempting to exploit this privilege escalation vulnerability
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped149.0.7827.53
Update Google Chrome to version 149.0.7827.53 or later. Organizations should also review installed extensions and ensure users are trained not to install untrusted extensions.
Chrome 149.0.7827.53 or later
- 1. Open Google Chrome browser
- 2. Navigate to Chrome Settings (three dots menu > Settings)
- 3. Click on 'About Chrome' in the left sidebar
- 4. Chrome will automatically check for updates and display the current version
- 5. If an update is available, click 'Update Google Chrome'
- 6. Restart the browser to complete the update
- 7. Verify the version is 149.0.7827.53 or later by returning to 'About Chrome'
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Chrome
Scoped from the published advisory
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-11308 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-11308 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data