CVE-2026-126799: gotenberg · Server-Side Request Forgery (SSRF)
Affects gotenbergSource CVE Database V5
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
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 6.9 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 7.5 |
- 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:NExploitation evidence
Disclosed: evidence found.
CVE published 11 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 11 Nov 2026.
What to do
Upgrade gotenberg to 8.38.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| gotenberggotenberg | Affected
| Fixed in
|
Gogotenbergpkg:golang/gotenbergOther threats | Affected
| Fixed in
|
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
- github.com/gotenberg/gotenberg/security/advisories/GHSA-fqg9-x2xw-5crx (opens in a new tab)
- github.com/gotenberg/gotenberg/commit/8e850b1c932452627fba397f2005dd6fd57b9617 (opens in a new tab)
- github.com/gotenberg/gotenberg/releases/tag/v8.38.0 (opens in a new tab)
- github.com/gotenberg/gotenberg/blob/v8.37.0/pkg/gotenberg/outbound.go (opens in a new tab)
- vulncheck.com/advisories/gotenberg-8.31.0-before-8.38.0-ssrf-via-ipv6-zone-identifiers-in-ispublicip (opens in a new tab)