CVSS 3.1
9.1 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:HCVE-2026-40281
Critical (9.1) in thecodingmachine gotenberg. EPSS 2.3% chance of exploitation in the next 30 days. Fixed in github.com/gotenberg/gotenberg/v8 8.31.0.
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.
Severity
- EPSS
- 2.3% chance of exploitation in the next 30 days; higher than 82% of CVEs (scores of 2026-10-31)
- CWE
- CWE-88
- Published
- Modified
- Record from
- the NVD, synced
Affected
- thecodingmachine:gotenberg
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-q7r4-hc83-hf2q | Go | github.com/gotenberg/gotenberg/v8 | <8.31.0 | 8.31.0 |
| GO-2026-5572 | Go | github.com/gotenberg/gotenberg/v7 | all versions | no fix published |
| GO-2026-5572 | Go | github.com/gotenberg/gotenberg/v8 | <8.31.0 | 8.31.0 |