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.
References
| Link | Resource |
|---|---|
| https://github.com/gotenberg/gotenberg/security/advisories/GHSA-2pmr-289p-44r3 | Exploit Mitigation Vendor Advisory |
| https://github.com/gotenberg/gotenberg/security/advisories/GHSA-2pmr-289p-44r3 | Exploit Mitigation Vendor Advisory |
Configurations
History
18 May 2026, 13:02
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/gotenberg/gotenberg/security/advisories/GHSA-2pmr-289p-44r3 - Exploit, Mitigation, Vendor Advisory | |
| First Time |
Thecodingmachine gotenberg
Thecodingmachine |
|
| CPE | cpe:2.3:a:thecodingmachine:gotenberg:*:*:*:*:*:*:*:* |
14 May 2026, 19:16
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/gotenberg/gotenberg/security/advisories/GHSA-2pmr-289p-44r3 - |
14 May 2026, 16:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-14 16:16
Updated : 2026-05-18 13:02
NVD link : CVE-2026-42592
Mitre link : CVE-2026-42592
CVE.ORG link : CVE-2026-42592
JSON object : View
Products Affected
thecodingmachine
- gotenberg