CVE-2026-82845

critical · 9.9

The Masteriyo LMS WordPress plugin before 3.4.1 does not prevent user-supplied values held as metadata from being deserialized when they are read back, allowing users with a minimal account to inject arbitrary PHP objects and, by way of a class shipped in a library bundled with the Masteriyo LMS WordPress plugin before 3.4.1, write and execute arbitrary code on the server. A weaker form of the same issue is reachable without an account and yields an arbitrary file write rather than code execution.

9.9

CVSS

0.6%

EPSS (exploit prob.)

50th

EPSS percentile

2026-09-12

Published

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

Weaknesses

CWE-502

References

https://wpscan.com/vulnerability/5ced30ea-8b78-495f-b10c-42b3f10adcb3/

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-82845