CVSS 3.1
9.4 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:LCVE-2026-42596
Critical (9.4) in thecodingmachine gotenberg. EPSS 1.6% chance of exploitation in the next 30 days. Fixed in github.com/gotenberg/gotenberg/v8 8.32.0.
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.31.0, the default deny-lists used by Gotenberg's downloadFrom feature and webhook feature are bypassable. Because the filter is regex-based and case-sensitive, an unauthenticated attacker can supply URLs such as http://[::ffff:127.0.0.1]:... and reach loopback or private HTTP services that the default deny-list is intended to block. This crosses a real security boundary because an external caller can force the server to make outbound requests to internal-only targets. This vulnerability is fixed in 8.31.0.
Severity
- EPSS
- 1.6% chance of exploitation in the next 30 days; higher than 75% of CVEs (scores of 2026-10-31)
- CWE
- CWE-918
- Published
- Modified
- Record from
- the NVD, synced
Affected
- thecodingmachine:gotenberg
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-4vmc-gm8v-m35h | Go | github.com/gotenberg/gotenberg/v8 | <8.32.0 | 8.32.0 |
| GO-2026-5132 | Go | github.com/gotenberg/gotenberg/v7 | all versions | no fix published |
| GO-2026-5132 | Go | github.com/gotenberg/gotenberg/v8 | <8.32.0 | 8.32.0 |