CVE-2026-27018
Gotenberg: Chromium deny-list bypass via case-insensitive URL scheme
HIGH 7.8EPSS 1.6%
Gotenberg is an API for converting document formats. Prior to version 8.29.0, the fix introduced for CVE-2024-21527 can be bypassed using mixed-case or uppercase URL schemes. This issue has been patched in version 8.29.0.
- Affected
- gotenberg
- CVSS v4.0 GITHUB
- 7.8 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS v4.0 GitHub
- 7.8 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P - CVSS v3.1 NVD
- 7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - EPSS
- 1.63% chance of exploitation in the next 30 days, 76th percentile
- Published
- 2026-03-30
- Updated
- 2026-03-31
Proof-of-concept exploits (1)
Security advisories
- gotenberg/gotenberg/security/advisories/GHSA-jjwv-57xh-xr6r
- gotenberg/gotenberg/commit/06b2b2e10c52b58135edbfe82e94d599eb0c5a11