CVE-2026-54501
CriticalCVSS 9.4Summary
In Browsertrix from 1.15.0 until 1.22.8, improper sanitization of Git URLs specified as Custom Behaviors allows command injection through /api/orgs/*/crawlconfigs/validate/custom-behavior. A user with crawler or administrator permission can supply a crafted Git URL that executes arbitrary operating-system commands in the backend pod.
Risk Assessment
An attacker with the required permissions can execute arbitrary commands in the backend, potentially exposing, modifying, or deleting application data, archives, browser profiles, and proxy credentials.
Recommendation
Update Browsertrix to version 1.22.8 or later and restrict open registration and the granting of crawler/administrator permissions.
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Original NVD description (English source)
Browsertrix is a high-fidelity, browser-based crawling service for web archiving that can be self-hosted or used through Webrecorder's hosted instance. From 1.15.0 until 1.22.8, Browsertrix improperly sanitizes Git URLs specified as Custom Behaviors, allowing command injection through /api/orgs/*/crawlconfigs/validate/custom-behavior. A user with crawler or administrator permission on the specific instance can supply a crafted Git URL that executes arbitrary operating-system commands in the backend pod. Open registration or hosted free-trial access can make the required role broadly obtainable. Successful exploitation can expose, modify, or delete application database records, archived items, browser profiles, storage data, proxy credentials, and other configured service data. This issue is fixed in version 1.22.8.