CVE-2009-4787
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 · uneditedMultiple cross-site request forgery (CSRF) vulnerabilities in Pligg before 1.0.3 allow remote attackers to hijack the authentication of administrators for requests that create user accounts or have unspecified other impact.
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 confidenceMultiple cross-site request forgery (CSRF) vulnerabilities in Pligg CMS versions before 1.0.3 allow remote attackers to hijack administrator authentication sessions and perform unauthorized actions such as creating user accounts, likely through maliciously crafted requests sent to admin endpoints.
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<= 1.0.2= 1.0.0= 1.0.1CVSS 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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Identify Pligg CMS versionLocate the version file or check the README/changelog file in the Pligg installation directory to determine the exact version number installedAffected if Version is 1.0.0, 1.0.1, or any release up to and including 1.0.2
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Verify admin panel accessibilityAccess the admin login page (typically /admin/ or /admin/login.php) to confirm the admin interface is reachableAffected if Admin panel is publicly accessible without additional access controls
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Inspect admin form for CSRF protectionView the HTML source of a state-changing admin form (such as user creation or settings) and check for the presence of a CSRF token or anti-CSRF token fieldAffected if No CSRF token field (such as a hidden input with a random value or token parameter) is present in admin forms
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Check for Referer/Origin validationSubmit a request to an admin endpoint with a missing or mismatched Referer/Origin header and observe if the request is acceptedAffected if Requests without valid Referer/Origin headers are processed without rejection
If the installed Pligg CMS version is 1.0.0, 1.0.1, or any version up to 1.0.2, and the admin panel is accessible, the environment is likely affected by this CSRF vulnerability.
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 Pligg to version 1.0.3 or later which contains CSRF protection. Additionally, implement anti-CSRF tokens on all state-changing admin forms and validate Referer/Origin headers.
- 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-2009-4787 — 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-2009-4787 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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