Read the docs

Stored cross-site scripting in Feedzy RSS Aggregator for WordPress

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 RSS Aggregator by Feedzy plugin for WordPress through 5.2.11 does not sufficiently sanitize or escape the media:thumbnail URL taken from imported RSS feeds, which allows stored cross-site scripting (CWE-79). An unauthenticated attacker who controls an external RSS feed that the site already imports can inject arbitrary web scripts. The scripts run whenever a user opens an injected page.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

The RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'media:thumbnail@url' parameter in all versions up to, and including, 5.2.11 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires the attacker to control an external RSS feed that the target site has already configured for import; no WordPress account or special plugin configuration is needed beyond that condition.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00307 23rd 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
themeisleRSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregatorup to 5.2.11—No fix listedCNA
  • RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator Vendorthemeisle Affected up to 5.2.11 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:themeisle:rss_aggregator_by_feedzy:*:*:*:*:*:*:*:*——themeisle
  • cpe:2.3:a:themeisle:rss_aggregator_by_feedzy:*:*:*:*:*:*:*:* Versions — — ·themeisle

Remediation

The sources list no fixed version for RSS Aggregator by Feedzy.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

  1. 2026-10-16 Threatist record created from CVE-2026-109207
  2. 2026-10-16 CISA SSVC decision points changed
  3. 2026-10-16 Priority changed: MEDIUM → LOW
  4. 2026-10-16 Alias added: GHSA-9qvh-c8j2-mhj7

References

  • TI-2017-14315 WordPress Insert PHP Plugin < 3.3.1 PHP Code Injection via REST API CVSS 4.0CRITICAL 9.3
  • TI-2023-02146 Otter - Gutenberg Blocks < 2.2.6 - Author+ PHAR Deserialization CVSS 3.1HIGH 8.8
  • TI-2023-20819 WordPress Redirection for Contact Form 7 plugin <= 2.9.2 - Broken Access Control vulnerability CVSS 3.1HIGH 7.5
  • TI-2019-12631 A blind SSRF vulnerability exists in the Visualizer plugin before 3.3.1 for WordPress via… CVSS 3.1CRITICAL 10.0
  • TI-2023-02115 Product Addons & Fields for WooCommerce < 32.0.7 - Reflected Cross-Site Scripting CVSS 3.1MEDIUM 6.1
  • TI-2022-04265 RSS Aggregator by Feedzy < 4.1.1 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4
See all 135 →

Sources