CVE-2021-24854: QR Redirector < 1.6.1 - Contributor+ Stored Cross-Site Scripting

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-11-17 · updated 2026-06-17
Weakness: CWE-79

Description

The QR Redirector WordPress plugin before 1.6.1 does not sanitise and escape some of the QR Redirect fields, which could allow users with a role as low as Contributor perform Stored Cross-Site Scripting attacks.

Affected products

QR Redirector: before 1.6.1 — fixed in 1.6.1

How to fix

Upgrade to a fixed version: QR Redirector 1.6.1. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/0d422397-69ff-4d05-aafa-7a572e460e5f
https://wpscan.com/vulnerability/0d422397-69ff-4d05-aafa-7a572e460e5f

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