PT-2024-10890 · WordPress · Qyrr Wordpress Plugin

Dc11 · Published 2024-01-16 · Updated 2024-01-23 · CVE-2021-24559

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Qyrr WordPress plugin versions prior to 0.7

Description The issue allows for Cross-Site Scripting attacks due to the failure to escape the data-uri of the QR Code when outputting it in a src attribute. Additionally, the data uri to meta AJAX action, available to all authenticated users, is vulnerable to Stored Cross-Site Scripting, as it only has a CSRF check in place, with the nonce available to users with a role as low as Contributor. This allows any user with such role (and above) to set a malicious data-uri in arbitrary QR Code posts.

Recommendations For versions prior to 0.7, update to version 0.7 or later to resolve the issue. As a temporary workaround, consider restricting access to the data uri to meta AJAX action to higher roles until the update is applied.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-24559

Affected Products

Qyrr Wordpress Plugin

References · 4

• 🔥 https://wpscan.com/vulnerability/65a29976-163a-4bbf-a4e8-590ddc4b83f2 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-24559 · Security Note
• https://osv.dev/vulnerability/CVE-2021-24559 · Vendor Advisory
• https://twitter.com/CVEnew/status/1747293185645457919 · Twitter Post