CVE-2026-42596CRITICAL 9.4EPSS p26.9%

CVE-2026-42596CVE-2026-42596

Description

Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.31.0, the default deny-lists used by Gotenberg's downloadFrom feature and webhook feature are bypassable. Because the filter is regex-based and case-sensitive, an unauthenticated attacker can supply URLs such as http://[::ffff:127.0.0.1]:... and reach loopback or private HTTP services that the default deny-list is intended to block. This crosses a real security boundary because an external caller can force the server to make outbound requests to internal-only targets. This vulnerability is fixed in 8.31.0.

Scoring

CVSS 3.19.4 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
EPSS0.35% probability of exploitation · percentile 26.9% · 2026-06-19T12:03:05Z
Published2026-05-14
Last modified2026-05-18

Underlying weaknesses· 1

CWE-918

References

  1. https://github.com/gotenberg/gotenberg/security/advisories/GHSA-4vmc-gm8v-m35h
  2. https://github.com/gotenberg/gotenberg/security/advisories/GHSA-4vmc-gm8v-m35h

1

TypeTargetConfidenceTier
WeaknessServer-Side Request Forgery (SSRF)cwe-9180%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.