CVE-2025-11877

HIGH

User Activity Log <2.2 - Info Disclosure

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2025-11877. PoCs published by moritakaaz.

AI-analyzed exploit summary This repository contains a functional Go-based exploit for CVE-2025-11877, targeting the User Activity Log WordPress plugin (≤ 2.2). The exploit leverages an unauthenticated options update vulnerability to enable user registration or modify other site options by sending crafted failed login attempts.

Description

The User Activity Log plugin is vulnerable to a limited options update in versions up to, and including, 2.2. The failed-login handler 'ual_shook_wp_login_failed' lacks a capability check and writes failed usernames directly into update_option() calls. This makes it possible for unauthenticated attackers to push select site options from 0 to a non-zero value, allowing them to reopen registration or corrupt options like 'wp_user_roles', breaking wp-admin access. CVE-2025-13471 appears to be a duplicate of this CVE.

Exploits (1)

gitlab WORKING POC
by moritakaaz · poc
https://gitlab.com/moritakaaz/cve-2025-11877

This repository contains a functional Go-based exploit for CVE-2025-11877, targeting the User Activity Log WordPress plugin (≤ 2.2). The exploit leverages an unauthenticated options update vulnerability to enable user registration or modify other site options by sending crafted failed login attempts.

Classification
Working Poc 95%
Attack Type
Auth Bypass
Complexity
Trivial
Reliability
Reliable
Target: User Activity Log WordPress plugin ≤ 2.2
No auth needed
Prerequisites: Plugin must have 'Keep Failed Login Logs' enabled · Number of failed login attempts for non-existing users must be > 0
devstral-2 · analyzed Feb 23, 2026 Full analysis →

Scores

CVSS v3 7.5
EPSS 0.0034
EPSS Percentile 25.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-862
Status published
Products (1)
solwininfotech/User Activity Log < 2.2
Published Jan 07, 2026
Tracked Since Feb 18, 2026