CVE-2026-54806CWE-502

WordPress WP Activity Log plugin <= 5.6.3.1 - PHP Object Injection vulnerability

Critical · published June 17, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
50.0
In the wild
Unconfirmed
What it is

Unauthenticated PHP Object Injection in WP Activity Log <= 5.6.3.1 versions.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00640 · 50.0th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2026-06-17T09:51Z
EPSS history
Timeline
  • 17 JUN 09:51Z
    WordPress WP Activity Log plugin <= 5.6.3.1 - PHP Object Injection vulnerability
    cvelistv5