FeedWordPress <= 2026.0517 - Unauthenticated Stored Cross-Site Scripting via Syndicated Feed Content

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-110530
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-31 09:16:32 UTC
Updated2026-10-31 09:16:32 UTC
DescriptionThe FeedWordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2026.0517 via syndicated RSS/Atom feed content. The plugin's SyndicatedPost::sanitize_content() function only strips the 'target' attribute (the lines that would strip 'style' and 'on[a-z]+' event-handler attributes are commented out), and SyndicatedPost::insert_post() deliberately removes WordPress's wp_filter_kses and wp_filter_post_kses filters from content_save_pre before persisting imported feed items via wp_insert_post(). This makes it possible for unauthenticated attackers who control an external feed that a site has already subscribed to to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Risk And Classification

Primary CVSS: v3.1 7.2 HIGH from [email protected]

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

Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
3.1CNADECLARED7.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Radgeek FeedWordPress affected 2026.0517 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/feedwordpress/tags/2026.0517/syndicatedpost.class.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/feedwordpress/tags/2026.1016/syndicatedpost.class.php [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/cad2334c-21f5-40bc-8b08-32c12... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/feedwordpress/tags/2026.0517/syndicatedpost.class.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/feedwordpress/tags/2026.0517/syndicatedpost.class.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/feedwordpress [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Adrien Brunner (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-10-14T16:28:56.000ZVendor Notified
CNA2026-10-30T20:11:36.000ZDisclosed

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