CVE-2026-92811

high

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.

References

https://www.vulncheck.com/advisories/browserless-1.44.0-through-2.56.7-file-protocol-restriction-bypass

https://github.com/geo-chen/oss/blob/main/browserless.md

https://github.com/browserless/browserless/blob/v2.50.1/src/browsers/browsers.playwright.ts

https://github.com/browserless/browserless/blob/v2.50.1/src/browsers/browsers.cdp.ts#L105-L135

https://github.com/browserless/browserless

Details

Source: Mitre, NVD

Published: 2026-09-16

Updated: 2026-09-22

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Severity: Medium

CVSS v4

Base Score: 7.1

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Severity: High

EPSS

EPSS: 0.0026