CVE-2021-24559
5.4 · MEDIUMOverview
CVE-2021-24559 is a medium-severity vulnerability affecting patrickposner qyrr. It was published on January 16, 2024 and has a CVSS 3.1 base score of 5.4 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
The Qyrr WordPress plugin before 0.7 does not escape the data-uri of the QR Code when outputting it in a src attribute, allowing for Cross-Site Scripting attacks. Furthermore, the data_uri_to_meta AJAX action, available to all authenticated users, only had a CSRF check in place, with the nonce available to users with a role as low as Contributor allowing any user with such role (and above) to set a malicious data-uri in arbitrary QR Code posts, leading to a Stored Cross-Site Scripting issue.
Remediation
Check the references section for vendor advisories and patches from patrickposner. Update qyrr to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| patrickposner | qyrr | >= 0, < 0.7 | Affected |
Frequently Asked Questions
What is CVE-2021-24559?
CVE-2021-24559 is a medium-severity vulnerability affecting patrickposner qyrr. It was published on January 16, 2024 and has a CVSS 3.1 base score of 5.4 (MEDIUM).
How severe is CVE-2021-24559?
This vulnerability has a CVSS 3.1 base score of 5.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-24559?
Check the references section for vendor advisories and patches from patrickposner. Update qyrr to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-24559?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-24559 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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