CVE-2021-24176: The JH 404 Logger WordPress plugin through 1.1 doesn't sanitise the referer and path of 404 pages, when they a

Q: How do I fix CVE-2021-24176?

jh 404 logger: upgrade to newer than 1.1. Exact commands for each OS are on this page.

Q: Is CVE-2021-24176 being exploited?

CVE-2021-24176 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-2021-24176 affect?

CVE-2021-24176 affects jh 404 logger. Severity is medium (CVSS 5.4). The JH 404 Logger WordPress plugin through 1.1 doesn't sanitise the referer and path of 404 pages, when they are output in the dashboard, which leads to executing arbitrary JavaScript code in the WordPress dashboard.

Q: How urgent is CVE-2021-24176?

Priority 44/100. Public exploit reference

This month

MEDIUM 5.4UPGRADE

CVE-2021-24176 is a medium-severity flaw (CVSS 5.4) affecting jh 404 logger. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The JH 404 Logger WordPress plugin through 1.1 doesn't sanitise the referer and path of 404 pages, when they are output in the dashboard, which leads to executing arbitrary JavaScript code in the WordPress dashboard.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	2.0% (top 19%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-04-05
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: jh 404 logger project

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

Am I affected?

Timeline

2021-04-05 19:15 UTCPublished CVE record published
2026-06-17 03:39 UTCUpdated Record last modified

jh 404 logger project jh 404 logger UPGRADE

Affected: <= 1.1

Fixed in: newer than 1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy jh-404-logger || rpm -q jh-404-logger || jh-404-logger --version

2. UPGRADE to newer than 1.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade jh-404-logger

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade jh-404-logger

Note

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

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: WordPress JH 404 Logger <=1.1 - Cross-Site Scripting

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-2021-24176?

jh 404 logger: upgrade to newer than 1.1. Exact commands for each OS are on this page.

Is CVE-2021-24176 being exploited?

CVE-2021-24176 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-2021-24176 affect?

CVE-2021-24176 affects jh 404 logger. Severity is medium (CVSS 5.4). The JH 404 Logger WordPress plugin through 1.1 doesn't sanitise the referer and path of 404 pages, when they are output in the dashboard, which leads to executing arbitrary JavaScript code in the WordPress dashboard.

How urgent is CVE-2021-24176?

Priority 44/100. Public exploit reference

Software pages

WordPress vulnerabilities

References

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