CVE-2011-3994
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 · uneditedCross-site request forgery (CSRF) vulnerability in SKYARC MTCMS before 5.252, and the MultiFileUploader 0.44 and earlier, DuplicateEntry 1.2 and earlier, MailPack 1.741 and earlier, and AutoTagging 0.08 and earlier plugins for Movable Type, allows remote attackers to hijack the authentication of arbitrary users for requests that modify data.
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 confidenceCross-site request forgery (CSRF) vulnerability in SKYARC MTCMS before 5.252 and multiple Movable Type plugins (MultiFileUploader, DuplicateEntry, MailPack, AutoTagging). Allows remote attackers to hijack authenticated user sessions to perform unauthorized data modifications by tricking users into visiting malicious pages.
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<= 0.08<= 1.2<= 1.741<= 5.251= 5.2= 5.21= 5.22= 5.23= 5.24= 5.25= 5.251<= 0.44CVSS 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 MTCMS versionAccess the admin dashboard system information page or check the version file in the MTCMS installation directoryAffected if The installed version is 5.251 or earlier, or matches any of these exact versions: 5.2, 5.21, 5.22, 5.23, 5.24, 5.25, 5.251
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Identify installed Movable Type pluginsNavigate to the plugins administration panel and list all installed pluginsAffected if Any of these plugins are installed: Autotagging (version 0.08 or lower), Duplicateentry (version 1.2 or lower), Mailpack (version 1.741 or lower), Multifileuploader (version 0.44 or lower)
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Inspect form code for CSRF protectionView the HTML source of state-changing forms (create/edit entries, upload files, send mail) and check for the presence of a CSRF token field (commonly named __csrf_token, token, or similar)Affected if The forms lack a hidden CSRF token field or the token is missing from the form submission handling
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Verify token validation on server sideExamine the server-side code that handles form submissions for these plugins and confirm whether the CSRF token is validated before processing the requestAffected if The form handling code does not validate a CSRF token or verify Referer/Origin headers
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Test for CSRF vulnerabilityCreate a test HTML page that submits a request to a vulnerable endpoint (such as creating an entry or sending mail) without a token, and attempt to submit it from an authenticated browser sessionAffected if The request succeeds without a valid CSRF token, confirming the vulnerability
You are affected if you run MTCMS version 5.251 or earlier, or any of the listed plugin versions at or below their vulnerable thresholds, and your forms lack CSRF token validation.
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 dataImplement anti-CSRF tokens (synchronizer token pattern) on all state-changing forms and verify request origin via Referer/Origin headers. Ensure tokens are validated server-side for all POST/PUT/DELETE operations.
- Consultation2.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2011-3994 — 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-2011-3994 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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