ChromeWeb browser · Google
CVE-2026-11186
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 CSS in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to inject arbitrary scripts or HTML (UXSS) 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 confidenceA Universal Cross-Site Scripting (UXSS) vulnerability in Google Chrome's CSS implementation prior to version 149.0.7827.53 allows remote attackers to inject arbitrary scripts or HTML into web pages via a crafted HTML page. The flaw stems from inappropriate implementation in CSS handling, enabling script execution across different 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
< 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
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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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Determine Chrome versionOpen Chrome, click the three-dot menu > Help > About Google Chrome. The version number is displayed on this page.Affected if The displayed version is lower than 149.0.7827.53 (for example, 148.x.x.x or earlier).
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Verify Chrome is being usedConfirm that the browser being tested is Google Chrome, not a Chromium-based alternative (such as Microsoft Edge, Brave, or Vivaldi) which may have different version numbers.Affected if The browser is Google Chrome and the version from step 1 is below 149.0.7827.53.
You are affected if you are running Google Chrome version lower than 149.0.7827.53 and visit a webpage containing crafted CSS designed to exploit this UXSS flaw.
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. Until the browser is updated, avoid visiting untrusted websites and disable JavaScript via browser settings as a temporary workaround.
Chrome 149.0.7827.53 or later
- Open Google Chrome and navigate to Settings > Help > About Google Chrome
- Click 'Check for updates' or wait for Chrome to automatically check for updates
- Ensure Chrome updates to version 149.0.7827.53 or later
- Restart the browser if required to complete the update
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Chrome
Scoped from the published advisory
- Consultation1.0 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-2026-11186 — 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-2026-11186 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
- No spam, self-promotion, credentials, or personal data