PT-2026-30852 · Unknown+1 · Dlclark/Regexp2+1

Beryxz + 1 · Published 2026-04-07 · Updated 2026-04-07 · CVE-2026-35458

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Gotenberg versions 8.29.1 and earlier

Description Gotenberg uses the dlclark/regexp2 library to compile user-supplied scope patterns without a timeout. This allows users with access to features utilizing this logic to potentially hang workers indefinitely. Specifically, the /forms/chromium/screenshot/url API endpoint is vulnerable. Attackers can craft a malicious scope pattern within the extraHttpHeaders form field, using nested quantifiers that cause infinite backtracking (ReDoS), leading to a denial-of-service condition. The vulnerable code is located in gotenberg/pkg/modules/chromium/routes.go:200.

Recommendations Gotenberg versions prior to 8.29.1 should be updated.

Fix

DoS

Weakness Enumeration

CWE-1333

Related Identifiers

CVE-2026-35458

GHSA-FMWG-QCQH-M992

Affected Products

Gotenberg

Dlclark/Regexp2

References · 7

• https://github.com/gotenberg/gotenberg/security/advisories/GHSA-fmwg-qcqh-m992 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-fmwg-qcqh-m992 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-35458 · Security Note
• https://github.com/gotenberg/gotenberg · Note
• https://github.com/gotenberg/gotenberg/commit/cfb48d9af48cb236244eabe5c67fe1d30fb3fe25 · Note
• https://twitter.com/infoflowcloud/status/2041604558258835762 · Twitter Post
• https://twitter.com/CVEnew/status/2041603240643477752 · Twitter Post