CVE-2026-27018

HIGH

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

Title source: cna
STIX 2.1

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.

References (4)

Core 4

Scores

CVSS v3 7.5
EPSS 0.0003
EPSS Percentile 9.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-22 CWE-918
Status published
Products (4)
gotenberg/gotenberg 0Go
gotenberg/gotenberg 0 - 8.29.0Go
gotenberg/gotenberg < 8.29.0
thecodingmachine/gotenberg < 8.29.0
Published Mar 30, 2026
Tracked Since Mar 31, 2026