CVE-2021-40353

9.8 criticalEPSS 2.9%

Critical (9.8) in os4ed opensis. EPSS 2.9% chance of exploitation in the next 30 days.

A SQL injection vulnerability exists in version 8.0 of openSIS when MySQL or MariaDB is used as the application database. An attacker can then issue the SQL command through the index.php USERNAME parameter. NOTE: this issue may exist because of an incomplete fix for CVE-2020-6637.

Severity

CVSS 3.1

9.8 critical

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

EPSS: 2.9% chance of exploitation in the next 30 days; higher than 86% of CVEs (scores of 2026-10-31)
CWE: CWE-89
Published: 2021-09-01
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

os4ed:opensis

References

https://github.com/5qu1n7/CVE-2021-40353
https://www.opensis.com/download/english
https://github.com/5qu1n7/CVE-2021-40353
https://www.opensis.com/download/english

Check your stack JSON