Auth bypass in Difuse Kalmia
CVE-2025-65900
Kalmia CMS version 0.2.0 contains an Incorrect Access Control vulnerability in the /kal-api/auth/users API endpoint. Due to insufficient permission validation and excessive data exposure in the backend, an authenticated user with basic read permissions can retrieve sensitive information for all platform users.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (20.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 20.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Difuse Kalmia — versions 0.2.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/DifuseHQ/Kalmia (Product)
- github.com/Noxurge/CVE-2025-65900/blob/main/README.md (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-65900?
- CVE-2025-65900 is a medium-severity vulnerability in Difuse Kalmia, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2025-12-04.
- How severe is CVE-2025-65900?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2025-65900 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.