WP RSS Aggregator <= 4.19.2 - Subscriber+ Stored Cross-Site Scripting

2021-11-29 00:00

Krzysztof Zając

Strategic Overview

Status

Patched in 4.19.3

Affected PluginWP RSS Aggregator – RSS Import, Feed to Post, Autoblogging, AI Content

Affected Version< 4.19.3

CVSS5.4Medium

CVECVE-2021-24988

View all WP RSS Aggregator – RSS Import, Feed to Post, Autoblogging, AI Content vulnerabilities

Vulnerability Overview

The WP RSS Aggregator WordPress plugin before 4.19.3 does not sanitise and escape data before outputting it in the System Info admin dashboard, which could lead to a Stored XSS issue due to the wprss_dismiss_addon_notice AJAX action missing authorisation and CSRF checks, allowing any authenticated users, such as subscriber to call it and set a malicious payload in the addon parameter.

Technical Analysis

REMEDIATION: Update to version 4.19.3, or a newer patched version --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2021-24988 https://www.wordfence.com/threat-intel/vulnerabilities/id/5776ae23-3846-41bf-92dd-948230c334bf

CVSS Vector

5.4

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionRequired
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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