Auth bypass in Os4ed Opensis
CVE-2025-22931
An insecure direct object reference (IDOR) in the component /assets/stafffiles of OS4ED openSIS v7.0 to v9.1 allows unauthenticated attackers to access files uploaded by staff members.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (38.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/OS4ED/openSIS-Classic (Product)
- github.com/esusalla/vulnerability-research/tree/main/CVE-2025-22931 (Third Party Advisory)
Frequently asked questions
- What is CVE-2025-22931?
- CVE-2025-22931 is a high-severity vulnerability in Os4ed Opensis, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.5/10. Published 2025-04-03.
- How severe is CVE-2025-22931?
- High severity. CVSS v3 base score is 7.5 out of 10.