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VulnerabilityPublished

CVE-2026-5643: Cyber-III Student-Management-System · Cross-site Scripting

Affects Cyber-III Student-Management-SystemSource CVE Database V5

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Public exploit available · CVSS 4.8 Medium.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 4.0 base score
4.8Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    CVSS exploit maturity: proof of concept public

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Cyber-IIIStudent-Management-SystemAffected
  • =1a938fa61e9f735078e9b291d2e6215b4942af3f
Fixed in–

AI-suggested

Since the vendor has not responded or provided a fix, users should consider applying manual input validation or sanitization on the affected parameter as a temporary mitigation. Avoid exposing the vulnerable endpoint to untrusted users until a fix is available.

Description

CVE-2026-5643 is a cross-site scripting (XSS) vulnerability in the Cyber-III Student-Management-System affecting the /admin/Add notice/notice.php file. The issue arises from improper handling of the $_SERVER['PHP_SELF'] argument, allowing remote attackers to inject malicious scripts. The vulnerability has a medium severity with a CVSS score of 4.8. The vendor has not yet responded or provided a patch, and the product uses rolling releases, so specific fixed versions are not identified. Exploits are publicly available but no known exploitation in the wild has been reported.

References

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