Is CVE-2021-24870 in the CISA KEV catalog?

No. CVE-2021-24870 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-24870?

CVE-2021-24870 has a CVSS v3 base score of 6.1 (MEDIUM).

What is the EPSS score for CVE-2021-24870?

CVE-2021-24870 has an EPSS score of 0.25% (17th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-24870?

Upgrade wp fastest cache to 0.9.5 or later.

CVE & CISA-KEV Catalog

CVE-2021-24870

MEDIUM

6.1

CVSS v3

NVD

Description

The WP Fastest Cache WordPress plugin before 0.9.5 is lacking a CSRF check in its wpfc_save_cdn_integration AJAX action, and does not sanitise and escape some the options available via the action, which could allow attackers to make logged in high privilege users call it and set a Cross-Site Scripting payload

CWE-352Cross-Site Request Forgery

How to fix

Remediation Available

wp fastest cacheNVD

Affected:< 0.9.5Fixed in:0.9.5CVE-2021-24870derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.25%probability of exploitation in 30 days

17thpercentile

Low risk: more likely to be exploited than 17% of all known CVEs.

References

Exploit1

jetpack.com

Third-Party Advisory1

wpscan.com

Related Vulnerabilities

Other CWE-352 (Cross-Site Request Forgery) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2016-6277	High	8.8	100%	KEV	-
CVE-2014-0054	Medium	6.8	91%	-	Fix
CVE-2013-6429	Medium	6.8	90%	-	Fix
CVE-2022-41622	High	8.8	88%	-	-
CVE-2018-7700	High	8.8	75%	-	-
CVE-2015-2295	Medium	6.8	66%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-05-12.