CVE-2026-82481 Path traversal in cohttp
An attacker can exploit a directory traversal vulnerability in the cohttp library to read arbitrary files from the server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-82481?
CVE-2026-82481 is a high-severity path traversal vulnerability in mirage cohttp, published on 29 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The cohttp package before 6.3.0 for OCaml allows directory traversal.
Weakness: CWE-180
Which versions are affected by CVE-2026-82481?
How do I fix CVE-2026-82481?
No fix has been published for CVE-2026-82481 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-2026-82481 being exploited?
There is no known exploitation of CVE-2026-82481 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-82481, GHSA-qcjm-vmrx-v935, UBUNTU-CVE-2026-82481.