CVE-2026-13192 Progress Software CVE debrief

Who should care

Users of Progress Telerik UI for AJAX prior to v2026.2.708, specifically system administrators, security teams, and operators responsible for maintaining and securing affected deployments, should be aware of this vulnerability and take steps to mitigate it. This includes reviewing system inventories, assessing potential exposure, and implementing compensating controls where necessary. Additionally, developers and engineers involved in the development and maintenance of applications built on Progress Telerik UI for AJAX should also be informed to ensure that necessary patches or updates are applied.

Technical summary

The vulnerability exists in the RadEditor PDF export feature of Progress Telerik UI for AJAX prior to v2026.2.708. An authenticated attacker may submit malicious content to trigger server-side requests to arbitrary hosts, potentially leading to outbound network connections and exposure of Windows authentication credentials. This feature, commonly used for generating PDF documents from user-edited content, does not properly validate user input, allowing for server-side request forgery (SSRF) attacks. The vulnerability can be exploited by an attacker with access to the affected system, potentially resulting in unauthorized network connections and data exposure. The CVSS score of 6.5 indicates a medium severity, but the potential impact on Windows authentication credentials and network connections warrants careful consideration.

Defensive priority

Medium-High based on CVSS score and potential impact on Windows authentication credentials exposure through outbound network connections triggered by server-side requests to arbitrary hosts via RadEditor PDF export feature exploitation in Progress Telerik UI for AJAX prior to v2026.2.708. Defenders should prioritize patching and review compensating controls for exposed systems while remediation is scheduled and verified. Monitoring for suspicious network activity related to this vulnerability is also recommended. Additionally, reviewing relevant logs and tracking exceptions can help identify potential security incidents related to this vulnerability. Asset inventory and rollback/change windows should also be considered in the defensive strategy against this vulnerability. Source tracking and exposure review are crucial in understanding the vulnerability's scope and impact on the organization. Vendor patch guidance should be followed closely to ensure timely mitigation of this vulnerability. The vulnerability's CVSS score of 6.5 indicates a medium severity, but its potential impact on Windows authentication credentials and network connections warrants a higher defensive priority. Therefore, a Medium-High defensive priority is assigned to this vulnerability, reflecting its potential for significant security impact if left unmitigated. This priority level emphasizes the need for prompt action to patch or mitigate the vulnerability and to implement additional defensive measures to minimize potential security risks associated with this vulnerability in Progress Telerik UI for AJAX prior to v2026.2.708 deployments.

Recommended defensive actions

• Apply the patch provided by the vendor
• Restrict access to the RadEditor PDF export feature
• Monitor for suspicious network activity
• Review compensating controls for exposed systems
• Conduct an asset inventory to identify affected deployments
• Implement rollback/change windows for remediation
• Perform source tracking to understand vulnerability scope

Evidence notes

The CVE record was published on 2026-07-22T14:17:14.777Z and was last modified on 2026-07-22T20:16:47.983Z. The NVD entry is currently Undergoing Analysis. This vulnerability affects Progress Telerik UI for AJAX prior to v2026.2.708, specifically the RadEditor PDF export feature. The CVE record and NVD entry provide limited information on the vulnerability's scope and impact. Defenders should verify affected product deployments and review official advisories for further details.

Official resources