CVE-2026-51859 Path traversal in n/a
Attackers can exploit a directory traversal flaw in Bisheng to read or modify arbitrary files on 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-2026-51859?
CVE-2026-51859 is a critical path traversal vulnerability in n/a, published on 30 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
bisheng 2.3.0, 2.4.0, and 2.4.0-beta1 is vulnerable to directory traversal in save_download_file (src/backend/bisheng/core/cache/utils.py:290).
Weakness: CWE-22
Which versions are affected by CVE-2026-51859?
How do I fix CVE-2026-51859?
No fix has been published for CVE-2026-51859 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-2026-51859 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-51859 exists.
Sources
Also known as GHSA-vx7w-p635-5ppx.