CVE-2021-24768: WP RSS Aggregator < 4.19.2 - Admin+ Stored Cross-Site Scripting

Severity: medium (CVSS 4.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-11-29 · updated 2026-06-17
Weakness: CWE-79

Description

The WP RSS Aggregator WordPress plugin before 4.19.2 does not properly sanitise and escape the URL to Blacklist field, allowing malicious HTML to be inserted by high privilege users even when the unfiltered_html capability is disallowed, which could lead to Cross-Site Scripting issues.

Affected products

WP RSS Aggregator – News Feeds, Autoblogging, Youtube Video Feeds and More: before 4.19.2 — fixed in 4.19.2

How to fix

Upgrade to a fixed version: WP RSS Aggregator – News Feeds, Autoblogging, Youtube Video Feeds and More 4.19.2. Check the vendor advisory for mitigations.

References

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