Vulnerability · Published Sep 16, 2026 · Assigned by VulnCheck
CVE-2026-92811browserless 1.44.0 through 2.56.7 File Protocol Restriction Bypass
Medium 6.5
In plain English
A medium-severity information exposure in browserless from browserless. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 39% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.5%top 60.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| browserless | browserless | 1.44.0 – through 2.56.7 |
Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
References
- Researcher write-up technical-description, exploit
- the CDP class enforces getAllowFileProtocol technical-description
- the Playwright class never consults the setting technical-description
- https://github.com/browserless/browserless product
- VulnCheck Advisory: browserless 1.44.0 through 2.56.7 File Protocol Restriction Bypass third-party-advisory