GHSA-chwh-f6gm-r836: github.com/gotenberg/gotenberg/v8 (CVE-2026-42595)

Gotenberg: Server-Side Request Forgery via Chromium URL Endpoint with Redirect-Based Deny-List Bypass

CVSS 8.6 HighEPSS 0.0031 · 24th percentile

Published by the GitHub Advisory Database at 11 May 2026, 13:51 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
github.com/gotenberg/gotenberg/v8	Go	<8.32.0	8.32.0

Identifiers

GHSA-chwh-f6gm-r836 · CVE-2026-42595 · GO-2026-5324

Weakness (CWE)

CWE-918

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Gotenberg before 8.32.0 has a server-side request forgery flaw in its Chromium URL conversion endpoint, which has no default protection against internal HTTP targets. An unauthenticated attacker who can reach the API can make the server fetch internal resources and return them as a PDF. Upgrade to 8.32.0 or later.

Written 6 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.6	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0031, the 24th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

14 May 2026, 16:16 UTC Confirmed by NVD
31 Oct 2026, 15:05 UTC First seen by agentprime
31 Oct 2026, 15:05 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.