How severe is CVE-2021-24209?

CVE-2021-24209 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-24209 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 24% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24209?

CVE-2021-24209 affects Automattic Wp Super Cache. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24209?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-24209 published?

CVE-2021-24209 was published on 2021-04-05 and last updated on 2026-06-17.

CVE-2021-24209

CVE-2021-24209 is a high-severity vulnerability in Automattic Wp Super Cache with a CVSS 3.x base score of 7.2. Its EPSS exploit-prediction score of 24% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 9.0
EPSS exploit prediction: 24% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Automattic Wp Super Cache
Published: 2021-04-05
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-24209?: 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.
How severe is CVE-2021-24209?: CVE-2021-24209 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-24209 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 24% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24209?: CVE-2021-24209 affects Automattic Wp Super Cache. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24209?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-24209 published?: CVE-2021-24209 was published on 2021-04-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:automattic:wp_super_cache:*:*:*:*:*:wordpress:*:*

More vulnerabilities in Automattic Wp Super Cache

CVE-2013-2010 — Critical (CVSS 9.8): WordPress W3 Total Cache Plugin 0.9.2.8 has a Remote PHP Code Execution Vulnerability
CVE-2013-2009 — High (CVSS 8.8): WordPress WP Super Cache Plugin 1.2 has Remote PHP Code Execution
CVE-2021-24312 — High (CVSS 7.2): The parameters $cache_path, $wp_cache_debug_ip, $wp_super_cache_front_page_text, $cache_scheduled_time,…
CVE-2013-2008 — Medium (CVSS 6.1): WordPress Super Cache Plugin 1.3 has XSS.
CVE-2021-24329 — Medium (CVSS 5.4): The WP Super Cache WordPress plugin before 1.7.3 did not properly sanitise its wp_cache_location parameter in its…

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