The Easy Post Submission plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `create_post()` function in all versions up to, and including, 2.3.0. This is due to the `rbsm_submit_post` AJAX action being registered for unauthenticated users via `wp_ajax_nopriv_rbsm_submit_post` without any authorization checks when a `postId` parameter is supplied. This makes it possible for unauthenticated attackers to modify the title, content, excerpt, categories, and tags of arbitrary posts, as well as change the post status to draft (effectively unpublishing them) via the 'postId' parameter.

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Fixes

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Workaround

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History

Wed, 05 Aug 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 05 Aug 2026 10:45:00 +0000

Type Values Removed Values Added
First Time appeared Themeruby
Themeruby easy Post Submission – Frontend Posting, Guest Publishing & Submit Content For Wordpress
Wordpress
Wordpress wordpress
Vendors & Products Themeruby
Themeruby easy Post Submission – Frontend Posting, Guest Publishing & Submit Content For Wordpress
Wordpress
Wordpress wordpress

Wed, 05 Aug 2026 08:15:00 +0000

Type Values Removed Values Added
Description The Easy Post Submission plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `create_post()` function in all versions up to, and including, 2.3.0. This is due to the `rbsm_submit_post` AJAX action being registered for unauthenticated users via `wp_ajax_nopriv_rbsm_submit_post` without any authorization checks when a `postId` parameter is supplied. This makes it possible for unauthenticated attackers to modify the title, content, excerpt, categories, and tags of arbitrary posts, as well as change the post status to draft (effectively unpublishing them) via the 'postId' parameter.
Title Easy Post Submission <= 2.3.0 - Missing Authorization
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-08-05T15:58:19.066Z

Reserved: 2026-03-19T15:28:20.572Z

Link: CVE-2026-4431

cve-icon Vulnrichment

Updated: 2026-08-05T15:58:14.690Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-05T10:17:51Z

Weaknesses