CVE-2026-44313
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 · uneditedLinkwarden is a self-hosted, open-source collaborative bookmark manager to collect, organize and archive webpages. Prior to version 2.13.0, a Server-Side Request Forgery (SSRF) vulnerability in the fetchTitleAndHeaders function allows authenticated users to make arbitrary HTTP requests to internal services due to insufficient URL validation that only checks for "http://" or "https://" prefixes. This issue has been patched in version 2.13.0.
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 confidenceServer-Side Request Forgery (SSRF) vulnerability in Linkwarden's fetchTitleAndHeaders function allows authenticated users to make arbitrary HTTP requests to internal services due to insufficient URL validation that only checks for 'http://' or 'https://' prefixes, enabling potential access to internal infrastructure.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
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 Linkwarden installation and versionCheck the installed version by inspecting package.json, Docker image tags, or the /api/health endpoint if available. Common paths: /app/package.json or check the running container image tag.Affected if The installed version is any release prior to 2.13.0 (e.g., 2.12.0, 2.11.0, older).
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Verify fetchTitleAndHeaders feature is in useThis function is invoked when adding or editing links to automatically fetch page titles. Check if link creation/editing functionality is enabled in the instance.Affected if Users can add, edit, or import links through the web interface or API, which triggers the vulnerable function.
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Confirm user authentication is enabledCheck the Linkwarden authentication settings or user database to confirm that user registration or login is enabled. The vulnerability requires an authenticated user.Affected if User accounts exist or self-registration is permitted, allowing authenticated access to link management features.
You are affected if Linkwarden version is below 2.13.0, user authentication is enabled, and users can add or edit links which triggers the fetchTitleAndHeaders function.
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 · scopedUpgrade to version 2.13.0 or later which contains proper URL validation. Until then, restrict access to authenticated users only and consider network-level segmentation to limit exposure to internal services.
Linkwarden 2.13.0
- Upgrade Linkwarden to version 2.13.0 or later to remediate the SSRF vulnerability in the fetchTitleAndHeaders function
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-44313 — 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-2026-44313 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