CVE-2026-6636 p2r3 convert API buildCache.js Bun.serve path traversal
Remote attackers can exploit a path traversal vulnerability in the p2r3 convert API to read arbitrary files from the server.
- 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-2026-6636?
CVE-2026-6636 is a medium-severity path traversal vulnerability in p2r3 convert, published on 20 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was detected in p2r3 convert up to 6998584ace3e11db66dff0b423612a5cf91de75b. Affected is the function Bun.serve of the file buildCache.js of the component API. Performing a manipulation of the argument pathname results in path traversal. It is possible to initiate the attack remotely. The exploit is now public and may be used. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The vendor was contacted early about this disclosure but did not respond in any way.
Weakness: CWE-22
Which versions are affected by CVE-2026-6636?
How do I fix CVE-2026-6636?
No fix has been published for CVE-2026-6636 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-2026-6636 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6636 exists.
Sources
Also known as GHSA-42cc-jrr3-ghpw.