CVE-2026-42590

Gotenberg · Gotenberg

Gotenberg contains a vulnerability involving an incomplete list of disallowed inputs, allowing unauthenticated attackers to bypass security filters.

Executive summary

An unauthenticated security filter bypass vulnerability in Gotenberg allows attackers to potentially execute unauthorized actions, creating a significant risk to application integrity.

Vulnerability

This is an Incomplete List of Disallowed Inputs (CWE-184) vulnerability. The application fails to properly sanitize or restrict inputs, allowing an unauthenticated attacker to bypass intended security controls.

Business impact

The CVSS score of 8.2 (High) indicates a significant risk to system integrity and availability. By bypassing filters, attackers may be able to inject malicious payloads or trigger unintended application behaviors, which could lead to unauthorized data modification or denial-of-service conditions.

Remediation

Immediate Action: Monitor the Gotenberg project for official patch releases that address this security filter bypass.

Proactive Monitoring: Implement robust input validation and logging to detect attempts to submit malformed or unexpected data to the API.

Compensating Controls: Deploy a Web Application Firewall (WAF) with custom rulesets designed to detect and block malicious input patterns that the current application filters may be missing.

Exploitation status

Public Exploit Available: Unknown.

Analyst recommendation

Due to the high severity, administrators should proactively harden their Gotenberg environment. Until a confirmed patch is deployed, rely on layered defenses such as strict input validation at the gateway or WAF level to mitigate the risk of exploitation.