SB2026040871 - Inefficient regular expression complexity in gotenberg

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Main Vulnerability Database SB2026040871

SB2026040871 - Inefficient regular expression complexity in gotenberg

Published: April 8, 2026

Security Bulletin ID SB2026040871
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Inefficient regular expression complexity (CVE-ID: CVE-2026-35458)

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to inefficient regular expression complexity in the extraHttpHeaders scope pattern handling in gotenberg/pkg/modules/chromium/routes.go when processing user-supplied scope patterns. A remote attacker can send a specially crafted request containing a malicious scope pattern to cause a denial of service.

Exploitation can hang a worker indefinitely through catastrophic backtracking, and affects instances where the attacker can reach the /forms/chromium/screenshot/url endpoint and specify the extraHttpHeaders field.


Remediation

Install update from vendor's website.

References