CVE-2026-13185

HIGH 8.1CVE-2026-13185 · Published 22/07/2026 · updated 24/10/2026

In short

CVE-2026-13185 is a HIGH (CVSS 8.1) vulnerability affecting telerik ui for asp.net ajax (progress).
Chance of exploitation in the next 30 days (EPSS): 0.67%, higher than 51.9% of all vulnerabilities.
Fix: update to 2026.2.708 or later.

Package	Affected versions	Patched versions
telerik ui for asp.net ajax progress	`≥ 2013.1.220, < 2026.2.708`	`2026.2.708`

Description

In Progress® Telerik® UI for AJAX prior to v2026.2.708, applications using cookie-based storage in RadPersistenceManager or RadDockLayout deserialize attacker-controlled cookie content, allowing unauthenticated remote code execution.

References

telerik.com/products/aspnet-ajax/documentation/knowledge-base/kb-security-persistence-cookie-deserialization-CVE-2026-13185 · Vendor Advisory

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Package

Affected versions

Patched versions

telerik ui for asp.net ajax

progress

≥ 2013.1.220, < 2026.2.708

2026.2.708

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