CVE-2026-42592

Description

Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, FilterOutboundURL resolves the hostname, checks the resolved IPs against the private-address deny-list, and returns only the error. It discards the resolved addresses. Chromium later performs its own DNS resolution when it navigates to the URL. An attacker who controls DNS for a hostname with a short TTL returns a public IP on the first query (Gotenberg allows) and a private IP on the second query (Chromium connects to the attacker-chosen internal address). The CDP Fetch.requestPaused handler re-checks the URL but runs its own DNS resolution, leaving a timing window before Chromium's actual TCP connect. The rendered internal service response returns to the caller as a PDF. This vulnerability is fixed in 8.32.0.

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Produits concernés

• gotenberg
• Thecodingmachine gotenberg

Scores CVSS

Faiblesses (CWE)

• CWE-367
• CWE-918

Références

• https://github.com/gotenberg/gotenberg/security/advisories/GHSA-2pmr-289p-44r3 ExploitMitigationVendor Advisory
• https://github.com/gotenberg/gotenberg/security/advisories/GHSA-2pmr-289p-44r3 ExploitMitigationVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories