Which products and versions are affected by CVE-2021-24209?

Affected: WP Super Cache (Automattic). The full list is in the CVE brief.

Is CVE-2021-24209 being exploited in the wild?

It is exploited in the wild, listed in Industry KEV feed since Dec 9, 2021.

Is CVE-2021-24209 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2021-24209?

No public exploit code is known.

Is there a fix for CVE-2021-24209?

Fixed versions are available, including WP Super Cache 1.7.2.

How urgently should CVE-2021-24209 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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On CISA KEVHigh

CVE-2021-24209WP Super Cache Code Injection

WP Super Cache <= 1.7.1 - Authenticated (Admin+) Remote Code Execution

Published Apr 6, 2021 · Updated Oct 20, 2026 · Also known as 0f6bc166-8489-44bc-862e-dd4dcc1dcff8, WORDFENCE-0f6bc166-8489-44bc-862e-dd4dcc1dcff8

Key Facts

Patch immediately

CVE-2021-24209 is a high-severity vulnerability (CVSS 7.2 v3.1) affecting WP Super Cache (Automattic).
It is exploited in the wild, listed in Industry KEV feed since Dec 9, 2021. No public exploit code is known.
EPSS estimates a 28% probability of exploitation in the next 30 days.
Fixed versions are available, including WP Super Cache 1.7.2.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Scores

CVSS v3.1

7.2

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

28%

Higher than 98.0% of all scored CVEs

Exploit maturity

Exploited (KEV)

ATLAS score

53/100

Publication score, see How it works

Exploitation Verdict

KEV listed

Dec 9, 2021

247 days after publication

Federal due date

None

No federal due date

Ransomware use

Not reported

Attributed actors

None named

Exploit & Defence Guidance

Exploit maturity

Exploited (KEV)

Public exploit code

Proof-of-concept links

In-the-wild evidence

Reports of active use

Advisories And Exploit References

Description

The WP Super Cache WordPress plugin before 1.7.2 was affected by an authenticated (admin+) RCE in the settings page due to input validation failure and weak $cache_path check in the WP Super Cache Settings -> Cache Location option. Direct access to the wp-cache-config.php file is not prohibited, so this vulnerability can be exploited for a web shell injection.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
Industry KEV feed	Dec 9, 2021	n/a	Not reported

Affected Products

3 affected entries in total

Product	Affected versions	Fixed in
WP Super CacheAutomattic	See advisory	1.7.2

Patched Releases

WP Super Cache

1.7.2

Timeline

Publicly disclosed
Apr 6, 2021
Added to Industry KEV feed
Dec 9, 2021
Last updated
Oct 20, 2026

Weakness Type

CWE-20 Improper Input Validation
CWE-94 Improper Control of Generation of Code ('Code Injection')

References

advisoryUSOM advisory
advisorywordfence.com · 0f6bc166-8489-44bc-862e-dd4dcc1dcff8
advisorywordfence.com · 0f6bc166-8489-44bc-862e-dd4dcc1dcff8
advisoryweb.nvd.nist.gov · vuln
advisoryweb.nvd.nist.gov · vuln

10 more references in the full CVE brief

FAQ

Common Questions.

The WP Super Cache WordPress plugin before 1.7.2 was affected by an authenticated (admin+) RCE in the settings page due to input validation failure and weak $cache_path check in the WP Super Cache Settings -> Cache Location option.
Affected: WP Super Cache (Automattic). The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Dec 9, 2021.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including WP Super Cache 1.7.2.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Is CVE-2021-24209 On Your Attack Surface?

Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.