CVE-2021-24327: The SEO Redirection Plugin – 301 Redirect Manager WordPress plugin before 6.4 did not sanitise the Redirect Fr

Q: How do I fix CVE-2021-24327?

seo redirection plugin: upgrade to 6.4. Exact commands for each OS are on this page.

Q: Is CVE-2021-24327 being exploited?

CVE-2021-24327 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-2021-24327 affect?

CVE-2021-24327 affects seo redirection plugin. Severity is medium (CVSS 4.8). The SEO Redirection Plugin – 301 Redirect Manager WordPress plugin before 6.4 did not sanitise the Redirect From and Redirect To fields when creating a new redirect in the dashboard, allowing high privilege users (even with the unfiltered_h

Q: How urgent is CVE-2021-24327?

Priority 34/100. Public exploit reference

Routine

MEDIUM 4.8UPGRADE

CVE-2021-24327 is a medium-severity flaw (CVSS 4.8) affecting seo redirection plugin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The SEO Redirection Plugin – 301 Redirect Manager WordPress plugin before 6.4 did not sanitise the Redirect From and Redirect To fields when creating a new redirect in the dashboard, allowing high privilege users (even with the unfiltered_html disabled) to set XSS payloads

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-79
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 seo redirection plugin UPGRADE

Affected: < 6.4

Fixed in: 6.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy seo-redirection-plugin || rpm -q seo-redirection-plugin || seo-redirection-plugin --version

2. UPGRADE to 6.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade seo-redirection-plugin

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade seo-redirection-plugin

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-2021-24327?

seo redirection plugin: upgrade to 6.4. Exact commands for each OS are on this page.

Is CVE-2021-24327 being exploited?

CVE-2021-24327 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-2021-24327 affect?

CVE-2021-24327 affects seo redirection plugin. Severity is medium (CVSS 4.8). The SEO Redirection Plugin – 301 Redirect Manager WordPress plugin before 6.4 did not sanitise the Redirect From and Redirect To fields when creating a new redirect in the dashboard, allowing high privilege users (even with the unfiltered_h

How urgent is CVE-2021-24327?

Priority 34/100. Public exploit reference

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2021-24325 MEDIUM 6.1 UPGRADE The tab parameter of the settings page of the 404 SEO Redirection WordPress plugin through 1.3 is vulnerable t

References

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