CVE-2025-52936 Improper Link Resolution Before File Access vulnerability in yrutschle/sslh
An attacker can exploit improper link resolution to access or modify files outside the intended directory in sslh.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-52936?
CVE-2025-52936 is a critical path traversal vulnerability in yrutschle sslh, published on 23 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper Link Resolution Before File Access ('Link Following') vulnerability in yrutschle sslh.This issue affects sslh: before 2.2.2.
Weakness: CWE-59
Which versions are affected by CVE-2025-52936?
How do I fix CVE-2025-52936?
Upgrade to a fixed version.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2025-52936 being exploited?
There is no known exploitation of CVE-2025-52936 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2025-52936, DLA-4238-1, GHSA-7wr7-q3ph-825q, UBUNTU-CVE-2025-52936, USN-8360-1.