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VulnerabilityPublished

CVE-2026-40280: gotenberg · Server-Side Request Forgery (SSRF)

Affects gotenbergSource GCVE Database

0

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

CVSS 4.0 base score
7.8High
How severe the flaw is on the 0–10 CVSS scale.
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:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 May 2026

  2. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  3. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  4. Observed by OffSeq 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

ProductAffectedFixed in
gotenberg gotenbergAffected
  • <=8.30.1
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.

References

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