CVE-2021-40542

6.1 mediumEPSS 3.2%

Medium (6.1) in os4ed opensis. EPSS 3.2% chance of exploitation in the next 30 days.

Opensis-Classic Version 8.0 is affected by cross-site scripting (XSS). An unauthenticated user can inject and execute JavaScript code through the link_url parameter in Ajax_url_encode.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: 3.2% chance of exploitation in the next 30 days; higher than 87% of CVEs (scores of 2026-11-01)
CWE: CWE-79
Published: 2021-10-11
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

os4ed:opensis

References

https://github.com/OS4ED/openSIS-Classic/issues/189
https://github.com/OS4ED/openSIS-Classic/issues/189

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