Spectra Gutenberg Blocks <= 2.19.25 - Authenticated (Contributor+) Remote Code Execution via Arbitrary PHP Function Call via Block Attributes
Title source: cnaExploitation Summary
CVE-2026-7465 has been observed exploited in the wild (reported by VulnCheck KEV). EIP tracks 2 public exploits from researchers including endangcamon, rootdirective-sec.
AI-analyzed exploit summary This repository contains a functional exploit PoC for CVE-2026-7465, targeting Spectra Gutenberg Blocks <= 2.19.25. The exploit leverages a vulnerability in the `render_block()` method to achieve authenticated RCE by registering a fake block with a malicious `render_callback` attribute.
Description
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.
Exploits (2)
This repository contains a functional exploit PoC for CVE-2026-7465, targeting Spectra Gutenberg Blocks <= 2.19.25. The exploit leverages a vulnerability in the `render_block()` method to achieve authenticated RCE by registering a fake block with a malicious `render_callback` attribute.
This repository contains a functional proof-of-concept exploit for CVE-2026-7465, targeting a vulnerability in the Spectra plugin for WordPress. The PoC demonstrates the vulnerability by creating a draft post with a crafted block that triggers the vulnerable behavior, confirming exploitation via a marker in the rendered content.
References (6)
Scores
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H