CVE-2026-92811 browserless 1.44.0 through 2.56.7 File Protocol Restriction Bypass
Authenticated attackers can bypass file protocol restrictions to read arbitrary files from the server via Playwright websocket endpoints.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-92811?
CVE-2026-92811 is a high-severity path traversal vulnerability in browserless, published on 16 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
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.
Weakness: CWE-200
Which versions are affected by CVE-2026-92811?
How do I fix CVE-2026-92811?
No fix has been published for CVE-2026-92811 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-92811 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-92811 exists.
Sources
Also known as GHSA-w2m9-jxm7-c4jp.