TI-2021-06416 Aliases CVE-2021-24124 GHSA-pvrg-m768-r86c

WP Shieldon 1.6.3 - Unauthenticated Cross-Site Scripting (XSS)

LOW 30CWE-79Published 2021-03-18 · Updated 2024-08-03

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

Unvalidated input and lack of output encoding in the WP Shieldon WordPress plugin, version 1.6.3 and below, leads to Unauthenticated Reflected Cross-Site Scripting (XSS) when the CAPTCHA page is shown could lead to privileged escalation.

Why it matters now

EPSS 0.01148 66th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Unknown	WP Shieldon	1.6.3 – 1.6.3	—	No fix listed	CNA

WP Shieldon VendorUnknown Affected 1.6.3 – 1.6.3 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:terryl:wp_shieldon::::::wordpress::*	up to 1.6.3	Vulnerable	Terry L.

cpe:2.3:a:terryl:wp_shieldon:*:*:*:*:*:wordpress:*:* Versions up to 1.6.3 Vulnerable ·Terry L.

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-24124
2026-10-03 Alias added: GHSA-pvrg-m768-r86c

References

Exploit 1

https://wpscan.com/vulnerability/8d0eb0b4-0cc0-44e5-b720-90b01df3a6ee

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences