CVE-2026-7465highobserved exploitationCWE-269

CVE-2026-7465: high-severity vulnerability in brainstormforce Spectra Gutenberg Blocks…

Spectra Gutenberg Blocks <= 2.19.25 - Authenticated (Contributor+) Remote Code Execution via Arbitrary PHP Function Call via Block Attributes

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63Vexday Risk Score

Prioritize patching. It exploitation observed by VulnCheck and has a public proof of concept.

ssvc Actcvss 8.8epss 1.2%
from disclosure to weapon4 days
Published on NVDMay 30
1st PoC+4d
VulnCheck+3d
The Spectra Gutenberg Blocks – Website Builder for the Block Editor plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 2.19.25. This makes it possible for authenticated attackers, with Contributor-level access and above, to execute code on the server. Exploitation requires a two-block payload embedded in post content: the first block registers a fake uagb/-prefixed block type with an attacker-specified render_callback, and the second block of the same fake type triggers invocation of that callback via call_user_func() during sequential block rendering in the same page request.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
brainstormforce · Spectra Gutenberg Blocks – Website Builder for the Block Editor
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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