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CVE-2025-5940: The Osom Blocks – Custom Post Type listing block plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘class_name’ parameter in all versions up to, and including, 1.2.1 due to ins

medium Affects osomblocks (WordPress plugin). Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

The Osom Blocks – Custom Post Type listing block plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘class_name’ parameter in all versions up to, and including, 1.2.1 due to ins

Package
osomblocks (WordPress plugin) WordPress
Affected versions
<1.2.2
Fixed in
1.2.2
Severity
medium  CVSS 6.4
Exploitation
not on CISA KEV · EPSS 0% (16.1th percentile)
Published
2025-06-27
Source
nvd

References

CWE-79
NVD recordosomblocks (WordPress plugin) advisories

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