CVE-2026-54501
Browsertrix: Arbitrary Command Injection due to Improper Command Sanitization in Git URLs specified as Custom Behaviors
- State
- Published
- Severity
- 9.4 Critical
- Published
- Sep 17, 2026
- Updated
- Sep 17, 2026
- Reserved
- Jun 15, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.4 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H | GitHub_M |
Weaknesses
- CWE-20 Improper Input Validation
- CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
- CWE-88 Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
- CWE-250 Execution with Unnecessary Privileges
Affected Products
| Product | Versions |
|---|---|
browsertrixwebrecorder |
|
References
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.