CVE-2026-2433

March 7, 2026, 8:16 a.m.

6.1
Medium

Description

The RSS Aggregator – RSS Import, News Feeds, Feed to Post, and Autoblogging plugin for WordPress is vulnerable to DOM-Based Cross-Site Scripting via postMessage in all versions up to, and including, 5.0.11. This is due to the plugin's admin-shell.js registering a global message event listener without origin validation (missing event.origin check) and directly passing user-controlled URLs to window.open() without URL scheme validation. This makes it possible for unauthenticated attackers to execute arbitrary JavaScript in the context of an authenticated administrator's session by tricking them into visiting a malicious website that sends crafted postMessage payloads to the plugin's admin page.

Product(s) Impacted

Vendor Product Versions
Wordpress
  • Rss Aggregator
  • *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a wordpress rss_aggregator / / / / / wordpress / /

References

https://plugins.trac.wordpress.org/browser/wp-rss-aggregator/tags/5.0.10/core/js/admin-shell.js#L153
https://plugins.trac.wordpress.org/browser/wp-rss-aggregator/tags/5.0.10/core/js/admin-shell.js#L58
https://plugins.trac.wordpress.org/browser/wp-rss-aggregator/trunk/core/js/admin-shell.js#L153
https://plugins.trac.wordpress.org/browser/wp-rss-aggregator/trunk/core/js/admin-shell.js#L58
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3473511%40wp-rss-aggregator%2Ftrunk&old=3439393%40wp-rss-aggregator%2Ftrunk&sfp_email=&sfph_mail=
https://www.wordfence.com/threat-intel/vulnerabilities/id/311960e7-c4b4-4638-980f-1e08ffa621ba?source=cve

Tags

CWE-79
[email protected]
2026-03-07
CVE-2026-2433

CVSS Score

6.1 / 10

CVSS Data - 3.1

  • Attack Vector: NETWORK
  • Attack Complexity: LOW
  • Privileges Required: NONE
  • Scope: CHANGED
  • Confidentiality Impact: LOW
  • Integrity Impact: LOW
  • Availability Impact: NONE

    • CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

    View Vector String

Timeline

Published: March 7, 2026, 8:16 a.m.
Last Modified: March 7, 2026, 8:16 a.m.

Status : Received

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.