CVE-2026-35409
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 · uneditedDirectus is a real-time API and App dashboard for managing SQL database content. Prior to 11.16.0, a Server-Side Request Forgery (SSRF) protection bypass has been identified and fixed in Directus. The IP address validation mechanism used to block requests to local and private networks could be circumvented using IPv4-Mapped IPv6 address notation. This vulnerability is fixed in 11.16.0.
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 confidenceDirectus prior to 11.16.0 has an SSRF protection bypass in its IP address validation mechanism. The protection designed to block requests to local/private networks can be circumvented by representing IPv4 addresses (like 127.0.0.1) in IPv4-Mapped IPv6 notation (::ffff:127.0.0.1), allowing attackers to access internal services.
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< 11.16.0CVSS 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
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/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 Directus versionCheck the installed version via the admin dashboard (Settings > About), the API endpoint /server/info, or the package.json file in the installation directoryAffected if The installed version is any version prior to 11.16.0 (e.g., 11.15.x, 11.14.x, earlier releases)
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Locate external request featureIdentify if Directus has the Remote Sources or Request URL functionality enabled. Check the database table directus_settings for fields related to remote_sources, or inspect the admin panel for any configured external data sources or URL-based integrationsAffected if External request capabilities (such as remote sources fetching data from URLs) are configured and active in the Directus instance
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Verify IP validation behaviorTest the IP validation by attempting to trigger an outbound request to an internal IP address using standard IPv4 notation (e.g., http://192.168.1.1) versus IPv4-mapped IPv6 notation (e.g., http://[::ffff:192.168.1.1]). If direct API access is available, inspect how the /files or /remote-src endpoints handle URL validationAffected if The system accepts IPv4-mapped IPv6 addresses (::ffff:x.x.x.x format) as valid targets while blocking plain IPv4 private addresses, indicating the bypass is possible
You are affected if your Directus installation is version 11.15.x or earlier AND the remote source or URL fetching functionality is enabled, allowing attackers to bypass SSRF protections via IPv4-mapped IPv6 address notation.
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 · scoped11.16.0
Upgrade to Directus 11.16.0 or later, which includes proper validation to block IPv4-Mapped IPv6 addresses that map to private/local IPv4 addresses.
Directus 11.16.0
- 1. Backup your Directus installation and database before proceeding with the upgrade.
- 2. Check your current Directus version to confirm it is below 11.16.0.
- 3. Consult the official Directus upgrade documentation for your deployment method (Docker, npm, etc.).
- 4. Upgrade Directus to version 11.16.0 or later.
- 5. Verify the upgrade was successful by checking the Directus version in the admin panel or via API.
- 6. Test that SSRF protection is working correctly - ensure requests to local/private network addresses are properly blocked, including IPv4-Mapped IPv6 addresses.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation3.0 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-2026-35409 — 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-2026-35409 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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