CVE-2021-24324: The 404 SEO Redirection WordPress plugin through 1.3 is lacking CSRF checks in all its settings, allowing atta

Q: How do I fix CVE-2021-24324?

all 404 redirect to homepage: upgrade to newer than 1.3. Exact commands for each OS are on this page.

Q: Is CVE-2021-24324 being exploited?

CVE-2021-24324 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-2021-24324 affect?

CVE-2021-24324 affects all 404 redirect to homepage. Severity is medium (CVSS 6.5). The 404 SEO Redirection WordPress plugin through 1.3 is lacking CSRF checks in all its settings, allowing attackers to make a logged in user change the plugin's settings. Due to the lack of sanitisation and escaping in some fields, it could

Q: How urgent is CVE-2021-24324?

Priority 39/100. Public exploit reference

Routine

MEDIUM 6.5UPGRADE

CVE-2021-24324 is a medium-severity flaw (CVSS 6.5) affecting all 404 redirect to homepage. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The 404 SEO Redirection WordPress plugin through 1.3 is lacking CSRF checks in all its settings, allowing attackers to make a logged in user change the plugin's settings. Due to the lack of sanitisation and escaping in some fields, it could also lead to Stored Cross-Site Scripting issues

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-352
Published	2021-05-17
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: clogica

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

Am I affected?

Timeline

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

clogica all 404 redirect to homepage UPGRADE

Affected: <= 1.3

Fixed in: newer than 1.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy all-404-redirect-to-homepage || rpm -q all-404-redirect-to-homepage || all-404-redirect-to-homepage --version

2. UPGRADE to newer than 1.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade all-404-redirect-to-homepage

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade all-404-redirect-to-homepage

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-2021-24324?

all 404 redirect to homepage: upgrade to newer than 1.3. Exact commands for each OS are on this page.

Is CVE-2021-24324 being exploited?

CVE-2021-24324 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-2021-24324 affect?

CVE-2021-24324 affects all 404 redirect to homepage. Severity is medium (CVSS 6.5). The 404 SEO Redirection WordPress plugin through 1.3 is lacking CSRF checks in all its settings, allowing attackers to make a logged in user change the plugin's settings. Due to the lack of sanitisation and escaping in some fields, it could

How urgent is CVE-2021-24324?

Priority 39/100. Public exploit reference

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2021-24326 MEDIUM 5.4 UPGRADE The tab parameter of the settings page of the All 404 Redirect to Homepage WordPress plugin before 1.21 was vu

References

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