CVE-2026-13181 Progress Software CVE debrief

Who should care

Organizations using Progress Telerik UI for AJAX prior to v2026.2.708 should prioritize patching this high-severity vulnerability to prevent potential remote code execution attacks. IT administrators, security teams, and developers responsible for maintaining Progress Telerik UI for AJAX deployments should be aware of this vulnerability and take immediate action to mitigate the risk.

Technical summary

The CVE-2026-13181 vulnerability is caused by a weakness in the AsyncUploadTypeName processing of Progress Telerik UI for AJAX. An attacker can exploit this vulnerability by uploading forged metadata, which can lead to remote code execution. The vulnerability has a CVSS score of 8.1 and is classified as HIGH severity. Successful exploitation could allow an attacker to execute arbitrary code, potentially leading to system compromise or data breaches.

Defensive priority

High

Recommended defensive actions

• Patch Progress Telerik UI for AJAX to v2026.2.708 or later
• Review and update affected deployments
• Monitor for suspicious activity
• Implement compensating controls
• Review system logs for indicators of compromise

Evidence notes

The CVE record was published on 2026-07-22T14:17:13.553Z and last modified on 2026-07-22T20:16:46.797Z. The NVD entry is currently Undergoing Analysis. This information is based on the NVD entry and the CVE record. The vulnerability affects Progress Telerik UI for AJAX versions prior to v2026.2.708. There is currently no information on known ransomware campaign use or exploitation. Defenders should verify the accuracy of this information with official sources and be aware of potential delays in vendor advisory publication.

Official resources