# CVE-2026-3906: wordpress: WordPress core is vulnerable to unauthorized access in versions 6.9 through 6.9.1

CVE-2026-3906 is fixed in wordpress on 1 platform by DEBIAN-CVE-2026-3906 (version 6.9.4+dfsg1-1), released March 11, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-3906
- Priority: Routine
- CVSS: 4.3 (medium)
- EPSS: 0.0035
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 11, 2026

## Description

WordPress core is vulnerable to unauthorized access in versions 6.9 through 6.9.1. The Notes feature (block-level collaboration annotations) was introduced in WordPress 6.9 to allow editorial comments directly on posts in the block editor. However, the REST API `create_item_permissions_check()` method in the comments controller did not verify that the authenticated user has `edit_post` permission on the target post when creating a note. This makes it possible for authenticated attackers with Subscriber-level access to create notes on any post, including posts authored by other users, private posts, and posts in any status.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | wordpress Debian 14 | 6.9.4+dfsg1-1 | [DEBIAN-CVE-2026-3906](https://patchblox.com/security/data/fix/linux/debian-cve-2026-3906.md) | Mar 11, 2026 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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