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CVE-2021-24286

MediumPublished

Redirect 404 to Parent < 1.3.1 - Reflected Cross-Site Scripting (XSS)

Published: May 14, 2021
Updated: Aug 3, 2024
Assigning CNA: WPScan
Evidence observed: Sep 29, 2021

Primary CVSS

6.1/ 10Medium

nvd · CVSS 3.1

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

EPSS probability estimate

13.9%

Moderate · next 30 days

Percentile: 96.4%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

The settings page of the Redirect 404 to parent WordPress plugin before 1.3.1 did not properly sanitise the tab parameter before outputting it back, leading to a reflected Cross-Site Scripting issue

Sources

WordPress Plugin Redirect 404 to Parent 1.3.0 - Reflected Cross-Site ScriptingExploit
0xB9 · php · Sep 29, 2021

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