Vulnerability Description
openSIS Classic 9.3 contains an insecure direct object reference vulnerability in the messaging module. Any authenticated user with access to the messaging module can request sent-message details from modules/messaging/SentMail.php by supplying an arbitrary mail_id value.
Related Weaknesses (CWE)
References
- https://fluidattacks.com/es/advisories/melanie
- https://github.com/OS4ED/openSIS-Classic
- https://github.com/OS4ED/openSIS-Classic/commit/c45d43146167324bae06bdf09de3e4bd
- https://fluidattacks.com/es/advisories/melanie
FAQ
What is CVE-2026-8406?
CVE-2026-8406 is a documented vulnerability. openSIS Classic 9.3 contains an insecure direct object reference vulnerability in the messaging module. Any authenticated user with access to the messaging module can request sent-message details from...
How severe is CVE-2026-8406?
CVSS scoring is not yet available for CVE-2026-8406. Check NVD for updates.
Is there a patch for CVE-2026-8406?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.