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CVE-2021-24988

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Date: December 27, 2021

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.

Language: PHP

Severity Score

Severity Score

Weakness Type (CWE)

Cross-Site Request Forgery (CSRF)

CWE-352

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-79

Missing Authorization

CWE-862

Top Fix

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Upgrade Version

Upgrade to version wprss/core - 4.19.3;wprss/core - dev-dependabot/npm_and_yarn/node-sass-7.0.0;wprss/core - dev-dependabot/npm_and_yarn/decode-uri-component-0.2.2;wprss/core - dev-dependabot/npm_and_yarn/minimist-1.2.6;wprss/core - no_fix;wprss/core - dev-dependabot/npm_and_yarn/express-4.18.2

Learn More

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): REQUIRED
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): SINGLE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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