CVE-2026-40281 Details.
Gotenberg <= 8.30.1 - Remote Code Execution
Atlas does not check this one. Needs requests that change data.
To test for this one, the check would have to send requests that could change data on the site. Atlas only ever reads public pages, so it does not run this check.
About CVE-2026-40281. What It Means.
Gotenberg through 8.30.1 sanitizes only the keys of the JSON metadata submitted to the PDF metadata write endpoint, leaving the values unvalidated. A newline inside a metadata value is written straight to the ExifTool process standard input, where it terminates the current argument and starts a new one, letting an unauthenticated attacker inject arbitrary ExifTool arguments and execute operating system commands through an advanced formatting expression.
Affected Product. What Is Hit.
- Vendor
- gotenberg
- Product
- Gotenberg
References. Where To Read More.
- https://github.com/gotenberg/gotenberg/security/advisories/GHSA-q7r4-hc83-hf2q
- https://github.com/gotenberg/gotenberg/commit/405f1069c026bb08f319fb5a44e5c67c33208318
- https://github.com/gotenberg/gotenberg/releases/tag/v8.31.0
- https://github.com/vulhub/vulhub/tree/master/gotenberg/CVE-2026-40281
- https://nvd.nist.gov/vuln/detail/CVE-2026-40281
FAQ
Common Questions.
Gotenberg <= 8.30.1 - Remote Code Execution. Gotenberg through 8.30.1 sanitizes only the keys of the JSON metadata submitted to the PDF metadata write endpoint, leaving the values unvalidated. A newline inside a metadata value is written straight to the ExifTool process standard input, where it terminates the current argument and starts a new one, letting an unauthenticated attacker inject arbitrary ExifTool arguments and execute operating system commands through an advanced formatting expression.
No. To test for this one, the check would have to send requests that could change data on the site. Atlas only ever reads public pages, so it does not run this check. The facts about CVE-2026-40281 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-40281 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update Gotenberg to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-40281. Atlas does not run a check for it, so nothing here says whether a particular site is affected.