CVE-2026-40281
Last modified
CVE-2026-40281 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. Gotenberg is a Docker-powered stateless API for PDF files. In versions 8.30.1 and earlier, the metadata write endpoint validates metadata keys for control characters but leaves metadata values unsanitized. EPSS estimates a 0.61% chance of exploitation in the next 30 days.
Description
Gotenberg is a Docker-powered stateless API for PDF files. In versions 8.30.1 and earlier, the metadata write endpoint validates metadata keys for control characters but leaves metadata values unsanitized. A newline character in a metadata value splits the ExifTool stdin line into two separate arguments, allowing injection of arbitrary ExifTool pseudo-tags such as -FileName, -Directory, -SymLink, and -HardLink. This is a bypass of the incomplete key-sanitization fix introduced in v8.30.1. An unauthenticated attacker can rename or move any PDF being processed to an arbitrary path in the container filesystem, overwrite arbitrary files, or create symlinks and hard links at arbitrary paths.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Thecodingmachine | Gotenberg | < 8.31.0 |
References
- https://github.com/gotenberg/gotenberg/security/advisories/GHSA-q7r4-hc83-hf2qExploit, Patch, Vendor Advisory
- https://github.com/gotenberg/gotenberg/security/advisories/GHSA-q7r4-hc83-hf2qExploit, Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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