CVE-2026-13192: RadEditor PDF Export SSRF Vulnerability in Telerik UI for ASP.NET AJAX

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-22 · updated 2026-10-24
Weakness: CWE-918

Description

In Progress® Telerik® UI for AJAX prior to v2026.2.708, insufficient validation of content submitted to the RadEditor PDF export feature may allow an authenticated attacker to trigger server-side requests to arbitrary hosts, resulting in outbound network connections and potential exposure of Windows authentication credentials.

Affected products

Progress Software Telerik UI for ASP.NET AJAX: from 2008.31314 before 2026.2.708 — fixed in 2026.2.708

How to fix

Upgrade to a fixed version: Progress Software Telerik UI for ASP.NET AJAX 2026.2.708. Check the vendor advisory for mitigations.

References

https://www.telerik.com/products/aspnet-ajax/documentation/knowledge-base/kb-security-radeditor-pdf-export-ssrf-CVE-2026-13192

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