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Content Blocks (Custom Post Widget)

Content Blocks (Custom Post Widget) is a WordPress component with 1 published CVE record in this archive. The latest tracked vulnerability was published Apr 18, 2026; the highest published CVSS base score is 6.4.

Plugin slug: content-blocks-custom-post-widget

CVE-2026-0894: Content Blocks (Custom Post Widget): Cross-site scripting

Content Blocks (Custom Post Widget) is affected by cross-site scripting. Exploitation requires an authenticated contributor account. Injected script can execute in the affected site's origin when the vulnerable output is viewed. The published affected range is <= 3.3.9. The public source does not disclose the vulnerable endpoint, action, parameter or function, so the precise input path remains unknown.

PublishedApr 18, 2026
Safe version guidanceSee mitigation notes
Published vulnerabilities for content-blocks-custom-post-widget
Safe version
Apr 18, 2026 CVE-2026-0894
Content Blocks (Custom Post Widget): Cross-site scripting
Content Blocks (Custom Post Widget) is affected by cross-site scripting. Exploitation requires an authenticated contributor account. Injected script can execute in the affected site's origin when the vulnerable output is viewed. The published affected range is <= 3.3.9. The public source does not disclose the vulnerable endpoint, action, parameter or function, so the precise input path remains unknown.
See mitigation notes
CVE6.4
NVDPending