Privilege escalation in Brainstormforce Spectra Gutenberg Blocks – Website Builder For The Block Editor

CVE-2026-7465

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.

Vulnerability class: Privilege Escalation

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (60.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-7465: held from 0.012 to 0.010.

EPSS over last 30 days · oldest: 0.012 · newest: 0.010 · change: -0.002

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2026-7465?
CVE-2026-7465 is a high-severity vulnerability in Brainstormforce Spectra Gutenberg Blocks – Website Builder For The Block Editor, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2026-05-30.
How severe is CVE-2026-7465?
High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2026-7465 known to be exploited?
3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.