CVE-2026-91107

critical · 9.3

openSIS Classic 9.3 allows an authenticated user with the built-in teacher role can select an arbitrary staff record through staff_id and cause the School Information update path to reset that selected account's password.

9.3

CVSS

0.2%

EPSS (exploit prob.)

15th

EPSS percentile

2026-10-05

Published

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-639

References

https://fluidattacks.com/advisories/hearts
https://github.com/OS4ED/openSIS-Classic
https://github.com/OS4ED/openSIS-Classic/commit/24bb530391a67c114cd4fe3dff65da7e070f5ed1

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-91107