TI-2023-06282 Aliases CVE-2023-6877 GHSA-3xp5-393r-g6q2

Cross-site scripting in themeisle RSS Aggregator by Feedzy – Feed to Post, Autoblogging…

LOW 28CWE-79Published 2024-04-07 · Updated 2026-04-08

Key facts

Attack vector: Network
Privileges required: Low
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 – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcode(s) in all versions up to, and including, 4.3.3 due to insufficient input sanitization and output escaping on the Content-Type field of error messages when retrieving an invalid RSS feed. 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00349 28th 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

Vendor	Product	Affected versions	Fixed in	Status	Source
themeisle	RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator	up to 4.3.3	—	No fix listed	CNA

RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator Vendorthemeisle Affected up to 4.3.3 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:themeisle:rss_aggregator_by_feedzy::::::wordpress::*	before 4.3.4	Vulnerable	themeisle

cpe:2.3:a:themeisle:rss_aggregator_by_feedzy:*:*:*:*:*:wordpress:*:* Versions before 4.3.4 Vulnerable ·themeisle

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-6877
2026-10-03 Alias added: GHSA-3xp5-393r-g6q2

References

Patch 1

https://plugins.trac.wordpress.org/changeset/3012849/feedzy-rss-feeds

Advisory 1

https://www.wordfence.com/threat-intel/vulnerabilities/id/7d25e85f-28f7-4cc5-9856-25cc5aaf1418?source=cve

TI-2022-04265 RSS Aggregator by Feedzy < 4.1.1 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4
TI-2024-01226 RSS Aggregator by Feedzy <= 4.4.2 - Authenticated(Contributor+) SQL Injection CVSS 3.1HIGH 8.8
TI-2024-01227 RSS Aggregator by Feedzy <= 4.4.2 - Missing Authorization to Arbitrary Page Creation and Publication CVSS 3.1MEDIUM 6.5
TI-2023-06217 Server-side request forgery in themeisle RSS Aggregator by Feedzy – Feed to Post… CVSS 3.1MEDIUM 6.4
TI-2023-06213 Cross-site scripting in themeisle RSS Aggregator by Feedzy – Feed to Post, Autoblogging… CVSS 3.1MEDIUM 6.4
TI-2023-06211 Missing authorization in themeisle RSS Aggregator by Feedzy – Feed to Post, Autoblogging… CVSS 3.1MEDIUM 5.4

See all 8 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences