CVE-2026-31278 Information disclosure in BioStar 2
Attackers can obtain Active Directory service account credentials in cleartext via a crafted GET request to the adserver setting endpoint.
- 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-2026-31278?
CVE-2026-31278 is a high-severity vulnerability in supremainc BioStar 2, published on 14 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue in the /api/v2/setting/adserversetting endpoint of Suprema BioStar 2 before 2.9.12 and and BioStar X before 1.0.2 allows attackers to obtain Active Directory service account credentials in cleartext by supplying a crafted GET request.
Weakness: CWE-319
Which versions are affected by CVE-2026-31278?
How do I fix CVE-2026-31278?
No fix has been published for CVE-2026-31278 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-31278 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-31278 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-h5qg-wfw7-j3ph.