RCE in Cyber-Iii Student-Management-System
CVE-2026-5643
A vulnerability was identified in Cyber-III Student-Management-System up to 1a938fa61e9f735078e9b291d2e6215b4942af3f. This impacts an unknown function of the file /admin/Add%20notice/notice.php of the component Admin Add Endpoint. Such manipulation of the argument $_SERVER['PHP_SELF'] leads to cross site scripting. It is possible to launch the attack remotely. The exploit is publicly available and might be used. This product takes the approach of rolling releases to provide continious delivery. Therefore, version details for affected and updated releases are not available. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 2.4 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (26.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.001
Affected products
- Cyber-Iii Student-Management-System — versions 1a938fa61e9f735078e9b291d2e6215b4942af3f
Weakness classification (CWE)
References
- vuldb.com/vuln/355431 (technical-description, vdb-entry)
- vuldb.com/vuln/355431/cti (signature, permissions-required)
- vuldb.com/submit/785859 (third-party-advisory)
- github.com/Cyber-III/Student-Management-System/issues/237 (issue-tracking, exploit)
- github.com/Cyber-III/Student-Management-System/ (product)
Frequently asked questions
- What is CVE-2026-5643?
- CVE-2026-5643 is a low-severity vulnerability in Cyber-Iii Student-Management-System, classified under Cross-site Scripting. CVSS score: 2.4/10. Published 2026-04-06.
- How severe is CVE-2026-5643?
- Low severity. CVSS v3 base score is 2.4 out of 10.