CVE Watchtower

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CVE-2026-54501NVD

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.
Severity Level
UNKNOWN
Published Date
17/09/2026
Last Modified
17/09/2026
Exploitation Status
????
EPSS Score
1.22% (percentile 67.3%)

CVSS Base Metrics

CVSS v4 (4.0)
CRITICAL 9.4
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

Weaknesses (CWE)

CWE-20 - CWE-20: Improper Input ValidationCWE-77 - CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')CWE-78 - CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')CWE-88 - CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')CWE-250 - CWE-250: Execution with Unnecessary Privileges

Affected & Patched Versions

ProductAffected VersionsPatched Version
webrecorder browsertrix>= 1.15.0, < 1.22.8N/A
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💬Webhooks — Slack & Teams integration.
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