Is CVE-2021-24563 in the CISA KEV catalog?

No. CVE-2021-24563 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-24563?

CVE-2021-24563 has a CVSS v3 base score of 6.1 (MEDIUM).

What is the EPSS score for CVE-2021-24563?

CVE-2021-24563 has an EPSS score of 26.38% (98th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2021-24563

MEDIUMEPSS 98th pctl

6.1

CVSS v3

NVD

Description

The Frontend Uploader WordPress plugin through 1.3.2 does not prevent HTML files from being uploaded via its form, allowing unauthenticated user to upload a malicious HTML file containing JavaScript for example, which will be triggered when someone access the file directly

CWE-79Cross-Site Scripting (XSS)

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

26.38%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

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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 2024-11-21.