What is CVE-2023-5133?

CVE-2023-5133 is a high-severity vulnerability in Solwininfotech User Activity Log, classified under CWE-290 AUTHENTICATION BYPASS BY SPOOFING. CVSS score: 7.5/10. Published 2023-10-16.

How severe is CVE-2023-5133?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2023-5133 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Solwininfotech User Activity Log

CVE-2023-5133

This user-activity-log-pro WordPress plugin before 2.3.4 retrieves client IP addresses from potentially untrusted headers, allowing an attacker to manipulate its value. This may be used to hide the source of malicious traffic.

Published 2023-10-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.007 (49.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.007 · change: +0.001

Affected products

Solwininfotech User Activity Log
User-Activity-Log-Pro — versions 0

Public proof-of-concept exploits

20142995/nuclei-templates

References

wpscan.com/vulnerability/36c30e54-75e4-4df1-b01a-60c51c0e76a3 (Exploit, technical-description, Third Party Advisory, exploit, vdb-entry)

Frequently asked questions

What is CVE-2023-5133?: CVE-2023-5133 is a high-severity vulnerability in Solwininfotech User Activity Log, classified under CWE-290 AUTHENTICATION BYPASS BY SPOOFING. CVSS score: 7.5/10. Published 2023-10-16.
How severe is CVE-2023-5133?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2023-5133 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.