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VulnerabilityPublished

CVE-2026-126799: gotenberg · Server-Side Request Forgery (SSRF)

Affects gotenbergSource CVE Database V5

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Not known to be exploited · CVSS 6.9 Medium : upgrade to 8.38.0 when convenient.

Data as of 11 Nov 2026, 21:32 UTC

CVSS 4.0 base score
6.9Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (VulnCheck)CVSS 4.06.9
CNA (VulnCheck)CVSS 3.17.5
Patch
Available – fixed in 8.38.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:L/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

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

    Not in CISA KEV and no source reports exploitation

  5. 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 11 Nov 2026.

What to do

Upgrade gotenberg to 8.38.0.

Affected software

ProductAffectedFixed in
gotenberggotenbergAffected
  • >=8.31.0 <8.38.0
Fixed in
  • 8.38.0
Gogotenbergpkg:golang/gotenbergOther threatsAffected
  • >=8.31.0 <8.38.0
Fixed in
  • 8.38.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade Gotenberg to version 8.38.0 or later, where this SSRF vulnerability is fixed. No other mitigations are specified or required once the official fix is applied.

Description

Gotenberg versions 8.31.0 through 8.37.x contain a server-side request forgery (SSRF) vulnerability in the IsPublicIP() function. This flaw allows unauthenticated attackers to bypass private IP deny-list protections by exploiting IPv6 zone identifiers appended to certain URLs. By appending a zone such as %25eth0 to unspecified or blocked IPv6 addresses in downloadFrom, webhook, or Chromium/LibreOffice URLs, attackers can access internal services and extract data included in generated PDFs. The vulnerability is fixed in version 8.38.0.

References

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