CVE-2012-6462
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 · uneditedOpera before 12.10 does not properly implement the Cross-Origin Resource Sharing (CORS) specification, which allows remote attackers to bypass intended page-content restrictions via a crafted request.
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 · moderate confidenceOpera before 12.10 has a flawed implementation of Cross-Origin Resource Sharing (CORS), a browser security mechanism that controls how web pages can request resources from different domains. The vulnerability allows malicious web pages to bypass CORS restrictions through specially crafted requests, potentially enabling unauthorized access to sensitive content from 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<= 12.10= 1.00= 2.00= 2.10= 2.12= 3.00= 3.10= 3.21= 3.50= 3.51= 3.60= 3.61CVSS 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
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- None
- Availability
- None
AV:N/AC:L/Au:N/C:P/I:N/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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Identify installed Opera browser versionOpen Opera, click the menu icon (top-left or top-right), select 'Help' > 'About Opera' to view the version number displayed in the dialogAffected if The version displayed is 12.10 or lower
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Confirm version against affected rangeCompare your detected version number to the affected range: versions <= 12.10 are vulnerableAffected if Your version is 12.10 or any earlier version such as 3.60, 3.51, 3.21, 3.10, 3.00, 2.12, 2.10, 2.00, or 1.00
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Verify CORS is in useCORS is a browser-native security mechanism. If web applications in your environment use XMLHttpRequest or Fetch API to make cross-origin requests, the browser's CORS implementation is activeAffected if Cross-origin requests are being made by web applications through this Opera instance and the browser version is 12.10 or lower
You are affected if the Opera browser version is 12.10 or lower and the browser is used to access web applications that make cross-origin requests.
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 dataUpgrade Opera browser to version 12.10 or later, or switch to an alternative browser with proper CORS implementation.
- Consultation1.0 h
- Implementation1.0 h
- Testing1.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2012-6462 — 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-2012-6462 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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- Version or environment caveats, and links to real fixes
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