CVE-2021-24316: The search feature of the Mediumish WordPress theme through 1.0.47 does not properly sanitise it's 's' GET par

Q: How do I fix CVE-2021-24316?

mediumish: upgrade to newer than 1.0.47. Exact commands for each OS are on this page.

Q: Is CVE-2021-24316 being exploited?

CVE-2021-24316 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-2021-24316 affect?

CVE-2021-24316 affects mediumish. Severity is medium (CVSS 6.1). The search feature of the Mediumish WordPress theme through 1.0.47 does not properly sanitise it's 's' GET parameter before output it back the page, leading to the Cross-SIte Scripting issue.

Q: How urgent is CVE-2021-24316?

Priority 50/100. EPSS top 6%: very likely to be exploited; Public exploit reference

This month

MEDIUM 6.1UPGRADE

CVE-2021-24316 is a medium-severity flaw (CVSS 6.1) affecting mediumish. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The search feature of the Mediumish WordPress theme through 1.0.47 does not properly sanitise it's 's' GET parameter before output it back the page, leading to the Cross-SIte Scripting issue.

Why this priority

EPSS top 6%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	6.4% (top 6%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-06-01
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: wowthemes

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

Am I affected?

Timeline

2021-06-01 14:15 UTCPublished CVE record published
2026-06-17 03:39 UTCUpdated Record last modified

wowthemes mediumish UPGRADE

Affected: <= 1.0.47

Fixed in: newer than 1.0.47

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mediumish || rpm -q mediumish || mediumish --version

2. UPGRADE to newer than 1.0.47 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mediumish

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mediumish

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 Mediumish Theme <=1.0.47 - 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-2021-24316?

mediumish: upgrade to newer than 1.0.47. Exact commands for each OS are on this page.

Is CVE-2021-24316 being exploited?

CVE-2021-24316 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-2021-24316 affect?

CVE-2021-24316 affects mediumish. Severity is medium (CVSS 6.1). The search feature of the Mediumish WordPress theme through 1.0.47 does not properly sanitise it's 's' GET parameter before output it back the page, leading to the Cross-SIte Scripting issue.

How urgent is CVE-2021-24316?

Priority 50/100. EPSS top 6%: very likely to be exploited; Public exploit reference

Software pages

WordPress vulnerabilities

References

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