High 7.8Published Mar 30, 2026

CVE-2026-27018Gotenberg: Chromium deny-list bypass via case-insensitive URL scheme

Updated under an hour ago (Oct 27, 2026, 7:23 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for gotenberg

Exploited in the last 30 days

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.

CVSS: 7.8 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-22, CWE-918
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Mar 31, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

gotenberg gotenberg gotenberg:gotenberg (from the name)	before 8.29.0	CNA record
thecodingmachine gotenberg thecodingmachine:gotenberg	before 8.29.0	NVD

References

References

https://github.com/gotenberg/gotenberg/security/advisories/GHSA-jjwv-57xh-xr6r	x-refsource-confirm, exploit, mitigation, vendor-advisory
https://github.com/gotenberg/gotenberg/commit/06b2b2e10c52b58135edbfe82e94d599eb0c5a11	x-refsource-misc, patch
https://github.com/gotenberg/gotenberg/commit/8625a4e899eb75e6fcf46d28394334c7fd79fff5	x-refsource-misc, patch
https://github.com/gotenberg/gotenberg/releases/tag/v8.29.0	x-refsource-misc, product, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.