CVE-2023-38881

6.1 mediumEPSS 0.6%

Medium (6.1) in os4ed opensis. EPSS 0.6% chance of exploitation in the next 30 days.

A reflected cross-site scripting (XSS) vulnerability in the Community Edition version 9.0 of OS4ED's openSIS Classic allows remote attackers to execute arbitrary JavaScript in the web browser of a user, by including a malicious payload into any of the 'calendar_id', 'school_date', 'month' or 'year' parameters in 'CalendarModal.php'.

Severity

CVSS 3.1

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 49% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2023-11-20
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

os4ed:opensis

References

https://github.com/OS4ED/openSIS-Classic
https://github.com/dub-flow/vulnerability-research/tree/main/CVE-2023-38881
https://www.os4ed.com/
https://github.com/OS4ED/openSIS-Classic
https://github.com/dub-flow/vulnerability-research/tree/main/CVE-2023-38881

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