CVE-2026-31272

critical · 9.8

MRCMS 3.1.2 contains an access control vulnerability. The save() method in src/main/java/org/marker/mushroom/controller/UserController.java lacks proper authorization validation, enabling direct addition of super administrator accounts without authentication.

9.8

CVSS

0.6%

EPSS (exploit prob.)

46th

EPSS percentile

2026-04-07

Published

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

Weaknesses

CWE-284

Affected products

Vendor	Product	Affected versions
mrcms	mrcms	3.1.2

Check a specific version with /api/v1/cve/match.

References

https://github.com/clockw1se0v0/Vul/blob/main/MRCMS/Unauthorized.md

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-31272