ChromeWeb browser · Google
CVE-2026-13921
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 · uneditedInsufficient validation of untrusted input in DeviceBoundSessionCredentials in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to bypass same origin policy via a crafted HTML page. (Chromium security severity: Medium)
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 confidenceInsufficient validation of untrusted input in Chrome's DeviceBoundSessionCredentials component allows a remote attacker to bypass Same Origin Policy (SOP) protections via a malicious HTML page. This SOP bypass could allow a crafted page to access resources belonging to other origins.
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
< 150.0.7871.47CVSS 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
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
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 version via browser UIOpen Chrome and navigate to chrome://settings/help, or click Chrome menu > Help > About Google ChromeAffected if The displayed version number is less than 150.0.7871.47 (for example, 150.0.7871.0 or any earlier version)
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Check Chrome version via command lineRun `google-chrome --version` or `chromium-browser --version` in a terminalAffected if The reported version is less than 150.0.7871.47
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Confirm DeviceBoundSessionCredentials component usageThis vulnerability affects the DeviceBoundSessionCredentials component. No specific runtime config check is needed as the component is part of Chrome's core session management.Affected if The installed Chrome version is below 150.0.7871.47 regardless of configuration
If the installed Google Chrome version is lower than 150.0.7871.47, the environment is affected by this SOP bypass vulnerability in DeviceBoundSessionCredentials.
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 · scoped150.0.7871.47
Update Google Chrome to version 150.0.7871.47 or later to obtain the patched version of DeviceBoundSessionCredentials with proper input validation.
Chrome 150.0.7871.47 or later
- Open Google Chrome browser
- Navigate to Settings > Help > About Google Chrome (or go to chrome://settings/help)
- Chrome will automatically check for and download the latest version
- If version 150.0.7871.47 or later is available, click 'Update Google Chrome'
- Restart the browser to complete the update
- Verify the update by returning to About Google Chrome and confirming the version number is 150.0.7871.47 or higher
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Chrome
Scoped from the published advisory
- Consultation1.0 h
- Implementation1.0 h
- Testing1.0 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 $1,200.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-13921 — 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-2026-13921 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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- 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
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