Cyber Resilience

CVE-2021-24577

MediumPublic PoC

Published: 11 October 2021

Published
11 October 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS Score 0.0037 59.1th percentile
Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-24577 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Wpdevart Coming Soon And Maintenance Mode. Its CVSS base score is 5.4 (Medium).

Operationally, ranked in the top 40.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

The Coming soon and Maintenance mode WordPress plugin before 3.5.3 does not properly sanitize inputs submitted by authenticated users when setting adding or modifying coming soon or maintenance mode pages, leading to stored XSS.

CWE(s)
CWE-79

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

wpdevart
coming soon and maintenance mode
≤ 3.5.3

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CA-8 Penetration Testing
addresses: CWE-79

Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.

SI-10 Information Input Validation
addresses: CWE-79

Validates web inputs to reject script-related content that could produce XSS.

SI-15 Information Output Filtering
addresses: CWE-79

Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.

References