Is CVE-2022-4539 in the CISA KEV catalog?

No. CVE-2022-4539 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-4539?

CVE-2022-4539 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2022-4539?

CVE-2022-4539 has an EPSS score of 0.63% (46th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-4539?

Upgrade web application firewall to 2.1.3 or later.

CVE & CISA-KEV Catalog

CVE-2022-4539

MEDIUM

5.3

CVSS v3

NVD

Description

The Web Application Firewall plugin for WordPress is vulnerable to IP Address Spoofing in versions up to, and including, 2.1.2. This is due to insufficient restrictions on where the IP Address information is being retrieved for request logging and login restrictions. Attackers can supply the X-Forwarded-For header with with a different IP Address that will be logged and can be used to bypass settings that may have blocked out an IP address or country from logging in.

CWE-348 CWE-345

How to fix

Remediation Available

web application firewallNVD

Affected:< 2.1.3Fixed in:2.1.3CVE-2022-4539derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Exploit Intelligence

0.63%probability of exploitation in 30 days

46thpercentile

Moderate risk: more likely to be exploited than 46% of all known CVEs.

References

Patch1

plugins.trac.wordpress.org

Third-Party Advisory1

wordfence.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-09-19.