CVE-2026-27018

Gotenberg: Chromium deny-list bypass via case-insensitive URL scheme

Published Mar 30, 2026 CVSS 4.0 · 7.8 High EPSS 1.7% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-jjwv-57xh-xr6r Gotenberg has Chromium deny-list bypass via case-insensitive URL scheme (bypass of GHSA-rh2x-ccvw-q7r3)
History
Type Values Removed Values Added
First Time appeared Thecodingmachine
Thecodingmachine gotenberg
CPEs cpe:2.3:a:thecodingmachine:gotenberg:*:*:*:*:*:*:*:*
Vendors & Products Thecodingmachine
Thecodingmachine gotenberg
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

Type Values Removed Values Added
First Time appeared Gotenberg
Gotenberg gotenberg
Vendors & Products Gotenberg
Gotenberg gotenberg
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Gotenberg: Chromium deny-list bypass via case-insensitive URL scheme
Weaknesses CWE-22
CWE-918
References
Metrics cvssV4_0

{'score': 7.8, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Mar 31, 2026, 2:16 PM
Reserved
Feb 17, 2026, 3:08 AM
Status
Analyzed
Published
Mar 30, 2026, 9:17 PM
Modified
Jun 17, 2026, 10:26 AM