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CVE-2026-120573

WPeMatico RSS Feed Fetcher <= 2.9.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'post_category' Parameter

Severity
Medium 6.4
Published
13 Nov 2026
Last changed
13 Nov 2026
Added to UpHeron
13 Nov 2026
Weakness
Cross-site scripting (CWE-79)
Attack
Over the network · Needs a user account · No user action needed
Attacker can
Read some data · Change some data
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Sources
CVE Program

Description

The WPeMatico RSS Feed Fetcher plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'post_category' parameter in all versions up to, and including, 2.9.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The injected payload is persisted in post meta as campaign_data, bypassing wp_kses sanitization, and executes in the browser session of any user with edit_posts — including Administrators — who opens the WPeMatico campaigns list screen.

From the CVE Program.

Affected software

SoftwareAffected versions
Wpematico (WordPress plugin)WordPress plugins · wp-plugin:wpematico
  • Every version up to 2.9.1

References

  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-120573