What’s Vulnerable › Vulnerabilities

CVE-2026-92811: browserless 1.44.0 through 2.56.7 File Protocol Restriction Bypass

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-16 · updated 2026-09-22
• Weakness: CWE-200

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.

Affected products

• browserless: from 1.44.0 through 2.56.7

References

• 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

Get alerted when CVE-2026-92811 or the next vulnerability affects your stack