Description
Gotenberg 8.31.0 before 8.38.0 contains a server-side request forgery vulnerability in IsPublicIP() that allows unauthenticated attackers to bypass private-IP deny-list protections using IPv6 zone identifiers. Attackers can append a zone such as %25eth0 to the unspecified address or blocked IPv6 prefixes in downloadFrom, webhook, or Chromium/LibreOffice URLs to reach internal services and read responses in the returned PDF.
Published: 2026-11-11
Score: 6.9 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Wed, 11 Nov 2026 21:15:00 +0000

Type Values Removed Values Added
Description Gotenberg 8.31.0 before 8.38.0 contains a server-side request forgery vulnerability in IsPublicIP() that allows unauthenticated attackers to bypass private-IP deny-list protections using IPv6 zone identifiers. Attackers can append a zone such as %25eth0 to the unspecified address or blocked IPv6 prefixes in downloadFrom, webhook, or Chromium/LibreOffice URLs to reach internal services and read responses in the returned PDF.
Title Gotenberg 8.31.0 before 8.38.0 SSRF via IPv6 Zone Identifiers in IsPublicIP
First Time appeared Thecodingmachine
Thecodingmachine gotenberg
Weaknesses CWE-918
CPEs cpe:2.3:a:thecodingmachine:gotenberg:*:*:*:*:*:*:*:*
Vendors & Products Thecodingmachine
Thecodingmachine gotenberg
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N'}

cvssV4_0

{'score': 6.9, 'vector': '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'}

Subscriptions

Thecodingmachine Gotenberg
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-11T20:53:03.948Z

Reserved: 2026-11-11T20:01:47.477Z

Link: CVE-2026-126799

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-11T21:16:43.347

Modified: 2026-11-11T21:16:43.347

Link: CVE-2026-126799

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-918

    Server-Side Request Forgery (SSRF)