CVE-2023-4279

HIGHNVD 7.57.5—Elevated

7.5

This User Activity Log WordPress plugin before 1.6.7 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.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 85.6%
KEV: Not listed

Published

September 4, 2023

Last Modified

April 23, 2025

References (2)

contact@wpscanhttps://wpscan.com/vulnerability/2bd2579e-b383-4d12-b207-6fc32cfb82bc
af854a3a-2127-422b-91ae-364da2661108https://wpscan.com/vulnerability/2bd2579e-b383-4d12-b207-6fc32cfb82bc

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-290Authentication Bypass by Spoofing

Data Freshness Timeline

(refreshed 10× in last 7d / 19× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-24 18:13 UTCEG score recompute
2026-05-24 18:13 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2023-4279?

CVE-2023-4279 is a high vulnerability published on September 4, 2023. This User Activity Log WordPress plugin before 1.6.7 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.

When was CVE-2023-4279 disclosed?

CVE-2023-4279 was first published in the National Vulnerability Database on September 4, 2023, with the most recent update on April 23, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-4279 actively exploited?

CVE-2023-4279 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 85.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-4279?

CVE-2023-4279 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2023-4279?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-4279, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2023-4279

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-4279?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)