---
id: CVE-2026-54501
title: >-
  Browsertrix is a high-fidelity, browser-based crawling service for web
  archiving that can be self-hosted or used through Webrecorder's hosted
  instance
summary: >-
  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 Cust…
severity: critical
cvss: 9.4
cvssVector: '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'
cwe:
  - CWE-20
  - CWE-77
  - CWE-78
  - CWE-88
  - CWE-250
vendor: webrecorder
product: browsertrix
affected:
  - 'browsertrix >= 1.15.0, < 1.22.8'
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T21:17:15.707'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-54501'
references:
  - url: >-
      https://github.com/webrecorder/browsertrix/commit/a306afc3893a74ed0ec2407bdf0515ed52da8e46
    label: security-advisories@github.com
  - url: 'https://github.com/webrecorder/browsertrix/releases/tag/v1.22.8'
    label: security-advisories@github.com
  - url: >-
      https://github.com/webrecorder/browsertrix/security/advisories/GHSA-47vv-v544-r985
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-17T20:23:30.287082Z'
cvssSource: cna
ingestedAt: '2026-09-17T20:28:02.782Z'
epss: 0.01217
epssPercentile: 0.67277
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.