CVE-2026-40280
Gotenberg has case-insensitive URL scheme that bypasses webhook and downloadFrom deny-list SSRF protection in github.com/gotenberg/gotenberg
9.3
CRITICAL
CVSS 3.1
EPSS 0.46%
Description
Gotenberg has case-insensitive URL scheme that bypasses webhook and downloadFrom deny-list SSRF protection in github.com/gotenberg/gotenberg
How to fix CVE-2026-40280
To remediate CVE-2026-40280, upgrade the affected package to a fixed version below.
- —upgrade to 8.31.0 or later
Is CVE-2026-40280 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 8.31.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N |
| osv | CVSS 3.1 | CRITICAL9.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N |