CVE-2025-13471Public exploitNetwork attack vector

Unauthenticated option changes via failed-login username

Published Jan 28, 2026 · Updated Jan 28, 2026

Authorization bypass in Solwin Infotech User Activity Log 2.2 and earlier allows remote attackers to set WordPress options to 1. When failed-login logging is enabled and its nonexistent-user threshold is 1, the login handler treats the submitted username as an option key and writes the value 1 after a failed attempt. An unauthenticated POST to wp-login.php can therefore enable disabled settings such as user registration, but it cannot choose values other than 1.

CVSS severity5.3
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Solwin Infotech User Activity Log 2.2 and earlier allows remote attackers to set WordPress options to 1. When failed-login logging is enabled and its nonexistent-user threshold is 1, the login handler treats the submitted username as an option key and writes the value 1 after a failed attempt. An unauthenticated POST to wp-login.php can therefore enable disabled settings such as user registration, but it cannot choose values other than 1.

The record

CVE
CVE-2025-13471
Published
Jan 28, 2026
Updated
Jan 28, 2026
Vendor
Solwin Infotech
Product
User Activity Log
Classifications
CWE-639, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Solwin Infotech · User Activity Logversion=0 <=2.2

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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