CVE-2026-4431
Easy Post Submission <= 2.3.0 - Missing Authorization
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: yes
- Technical impact: partial
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- themeruby Easy Post Submission – Frontend Posting, Guest Publishing & Submit Content for WordPress
through 2.3.0
References 5
plugins.trac.wordpress.org
- browser/easy-post-submission/tags/2.2.0/includes/client-ajax-handler.php#L38
- browser/easy-post-submission/tags/2.2.0/includes/client-ajax-handler.php#L974
- browser/easy-post-submission/tags/2.2.0/includes/client-ajax-handler.php#L1157
- changeset?sfp_email=&sfph_mail=&reponame=&new=3488045%40easy-post-submission%2Ftrunk&old=3427523%40easy-post-submission%2Ftrunk