Cyber Resilience

CVE-2025-8621

Medium

Published: 12 August 2025

Published
12 August 2025
Modified
15 April 2026
KEV Added
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Patch
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CVSS Score v3.1 6.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
EPSS Score 0.0016 37.2th percentile
Risk Priority 13 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-8621 is a medium-severity Basic XSS (CWE-80) vulnerability in Wordpress (inferred from references). Its CVSS base score is 6.4 (Medium).

Operationally, ranked at the 37.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

The Mosaic Generator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘c’ parameter in all versions up to, and including, 1.0.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with…

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Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

CWE(s)
CWE-80

Related Threats

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

Affected Assets

Wordpress
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inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References