Webrecorder Browsertrix up to 1.22.7 Custom Behavior input validation

Summaryinfo

A vulnerability was found in Webrecorder Browsertrix up to 1.22.7. It has been declared as critical. This impacts an unknown function of the component Custom Behavior Handler. Such manipulation leads to input validation. This vulnerability is uniquely identified as CVE-2026-54501. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Webrecorder Browsertrix up to 1.22.7. It has been rated as critical. Affected by this issue is some unknown processing of the component Custom Behavior Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-54501 since 06/15/2026. The exploitation is known to be easy. The attack may be launched remotely. The technical details are unknown and an exploit is not available.

Upgrading to version 1.22.8 eliminates this vulnerability.

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Productinfo

Vendor

• Webrecorder

Name

• Browsertrix

Version

• 1.22.0
• 1.22.1
• 1.22.2
• 1.22.3
• 1.22.4
• 1.22.5
• 1.22.6
• 1.22.7

Website

• Product: https://github.com/webrecorder/browsertrix/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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