CVE-2026-92811
Severity CVSS v4.0:
HIGH
Type:
CWE-200
Information Leak / Disclosure
Publication date:
16/09/2026
Last modified:
22/09/2026
Description
browserless versions 1.44.0 through 2.56.7 fail to enforce file protocol restrictions in Playwright websocket endpoints, allowing authenticated token holders to read arbitrary files. Attackers can navigate Playwright-driven browsers to file scheme URLs and access files accessible to the container process despite the ALLOW_FILE_PROTOCOL setting defaulting to false.
Impact
Base Score 4.0
7.10
Severity 4.0
HIGH
Base Score 3.x
6.50
Severity 3.x
MEDIUM
References to Advisories, Solutions, and Tools
- https://github.com/browserless/browserless
- https://github.com/browserless/browserless/blob/v2.50.1/src/browsers/browsers.cdp.ts#L105-L135
- https://github.com/browserless/browserless/blob/v2.50.1/src/browsers/browsers.playwright.ts
- https://github.com/geo-chen/oss/blob/main/browserless.md
- https://www.vulncheck.com/advisories/browserless-1.44.0-through-2.56.7-file-protocol-restriction-bypass