CVE-2026-126799

HighCVSS 7.5/10Last modified Nov 12, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N

Weakness enumeration

CWE-918

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
gotenberg	gotenberg	>= 8.31.0, < 8.38.0

References

Timeline

Published: Nov 11, 2026
Last modified: Nov 12, 2026
NVD status: Received

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