CVE-2022-4539: The Web Application Firewall plugin for WordPress is vulnerable to IP Address Spoofing in versions up to, and

Q: How do I fix CVE-2022-4539?

web application firewall: upgrade to 2.1.3. Exact commands for each OS are on this page.

Q: Is CVE-2022-4539 being exploited?

CVE-2022-4539 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-4539 affect?

CVE-2022-4539 affects web application firewall. Severity is medium (CVSS 5.3). 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 logg

Q: How urgent is CVE-2022-4539?

Priority 36/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 5.3REMOTEUPGRADE

CVE-2022-4539 is a medium-severity flaw (CVSS 5.3) affecting web application firewall. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 cou

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-348, CWE-345
Published	2024-08-31
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: miniorange

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-08-31 10:15 UTCPublished CVE record published
2026-06-17 05:21 UTCUpdated Record last modified

miniorange web application firewall UPGRADE

Affected: < 2.1.3

Fixed in: 2.1.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy web-application-firewall || rpm -q web-application-firewall || web-application-firewall --version

2. UPGRADE to 2.1.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade web-application-firewall

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade web-application-firewall

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-4539?

web application firewall: upgrade to 2.1.3. Exact commands for each OS are on this page.

Is CVE-2022-4539 being exploited?

CVE-2022-4539 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-4539 affect?

CVE-2022-4539 affects web application firewall. Severity is medium (CVSS 5.3). 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 logg

How urgent is CVE-2022-4539?

Priority 36/100. Remotely exploitable, no login, no user action

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2024-8073 CRITICAL 9.8 DOWNGRADE Improper Input Validation vulnerability in Hillstone Networks Hillstone Networks Web Application Firewall on 5

References

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