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TI-2026-83522 Aliases CVE-2026-110530GHSA-cr3r-cx3j-65fh

Stored cross-site scripting in FeedWordPress via syndicated feed content

Priority LOW 31CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

The FeedWordPress plugin for WordPress through 2026.0517 contains a stored cross-site scripting flaw (CWE-79) in syndicated RSS and Atom feed content. The sanitize_content() function strips only the target attribute, and insert_post() removes WordPress's KSES content filters before saving imported feed items. An unauthenticated attacker who controls an external feed that a site has subscribed to can inject web scripts that execute whenever a user opens an affected page.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

The 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00241 15th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
radgeekFeedWordPressup to 2026.0517—No fix listedCNA
  • FeedWordPress Vendorradgeek Affected up to 2026.0517 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for FeedWordPress.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Timeline

  1. 2026-10-31 Threatist record created from CVE-2026-110530
  2. 2026-10-31 Alias added: GHSA-cr3r-cx3j-65fh
  3. 2026-11-01 Priority changed: MEDIUM → LOW
  4. 2026-11-01 CISA SSVC decision points changed

References

Other 6

Sources

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