CVE-2026-40280: gotenberg · Server-Side Request Forgery (SSRF)
Affects gotenbergSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · public detection template (Nuclei) · CVSS 7.8 High · fixed in 8.31.0 : patch gotenberg soon.
Data as of 27 Oct 2026, 02:15 UTC
- Patch
- Available – fixed in 8.31.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 5 May 2026
Detectable: evidence found.
nuclei template: Gotenberg <= 8.30.1 - Server Side Request Forgery
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| gotenberg gotenberg | Affected
| Fixed in– |
AI-suggested
Upgrade Gotenberg to version 8.31.0 or later, where this SSRF bypass vulnerability has been fixed. No other mitigation is required as the fix addresses the root cause.
Description
Gotenberg versions 8.30.1 and earlier contain a Server-Side Request Forgery (SSRF) vulnerability due to case-sensitive URL scheme matching in deny-lists. This allows attackers to bypass restrictions by capitalizing URL schemes, enabling unauthorized requests to internal network services and cloud metadata endpoints. The issue is fixed in version 8.31.0.