ChromeWeb browser · Google
CVE-2013-0921
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 · uneditedThe Isolated Sites feature in Google Chrome before 26.0.1410.43 does not properly enforce the use of separate processes, which makes it easier for remote attackers to bypass intended access restrictions via a crafted web site.
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 confidenceThe Isolated Sites feature in Google Chrome before 26.0.1410.43 fails to properly enforce separate processes for isolated websites, allowing remote attackers to bypass intended access restrictions via a crafted website.
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
<= 26.0.1410.42= 26.0.1410.0= 26.0.1410.1= 26.0.1410.2= 26.0.1410.3= 26.0.1410.4= 26.0.1410.5= 26.0.1410.6= 26.0.1410.7= 26.0.1410.8= 26.0.1410.9= 26.0.1410.10CVSS 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
- M
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- Partial
- Availability
- Partial
AV:N/AC:M/Au:N/C:P/I:P/A:P
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://version in the browser or run 'google-chrome --version' from command lineAffected if Version is 26.0.1410.42 or lower, or specifically any of 26.0.1410.0 through 26.0.1410.10
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Confirm the specific vulnerable versionReview the full version string shown (e.g., 26.0.1410.0, 26.0.1410.1, 26.0.1410.2, etc.)Affected if The version exactly matches any listed vulnerable version from 26.0.1410.0 to 26.0.1410.10 inclusive
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Identify use of Isolated Sites featureCheck Chrome policies or flags: navigate to chrome://flags/#isolated-sites or review enterprise policies for IsolatedSites enabled domainsAffected if The Isolated Sites feature is enabled and actively isolating specific websites in the browser
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Verify process isolation is functioningOpen Task Manager (Shift+Esc) and observe whether isolated sites open in separate renderer processesAffected if Multiple isolated sites share the same process instead of running in isolated processes
You are affected if your Chrome version is 26.0.1410.42 or lower (including any version from 26.0.1410.0 through 26.0.1410.10) AND you use the Isolated Sites feature, as the flaw allows cross-site access within supposedly isolated processes.
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.
From vendor dataUpdate Google Chrome to version 26.0.1410.43 or later to obtain the patched version that properly enforces process isolation.
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-2013-0921 — 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-2013-0921 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