CVE-2021-24286

MEDIUM NUCLEI

Redirect 404 to Parent < 1.3.1 - Reflected Cross-Site Scripting via Tab Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-24286. PoCs published by 0xB9. A Nuclei detection template is also available.

AI-analyzed exploit summary This exploit demonstrates a reflected XSS vulnerability in the WordPress plugin 'Redirect 404 to Parent' version 1.3.0. The vulnerability is triggered via the 'tab' parameter in the admin panel, allowing arbitrary JavaScript execution.

Description

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

Exploits (1)

exploitdb WORKING POC
by 0xB9 · textwebappsphp
https://www.exploit-db.com/exploits/50350

This exploit demonstrates a reflected XSS vulnerability in the WordPress plugin 'Redirect 404 to Parent' version 1.3.0. The vulnerability is triggered via the 'tab' parameter in the admin panel, allowing arbitrary JavaScript execution.

Classification
Working Poc 100%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: WordPress Plugin Redirect 404 to Parent 1.3.0
Auth required
Prerequisites: Access to WordPress admin panel · Plugin 'Redirect 404 to Parent' version 1.3.0 installed
MITRE ATT&CK
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Nuclei Templates (1)

WordPress Plugin Redirect 404 to Parent 1.3.0 - Cross-Site Scripting
MEDIUMVERIFIEDby r3Y3r53

References (2)

Core 2
Core References
Exploit, Third Party Advisory x_refsource_confirm
https://wpscan.com/vulnerability/b9a535f3-cb0b-46fe-b345-da3462584e27

Scores

CVSS v3 6.1
EPSS 0.1400
EPSS Percentile 96.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (1)
mooveagency/redirect_404_to_parent < 1.3.1
Published May 14, 2021
Tracked Since Feb 18, 2026