Vulnerability details

CVE-2026-13183

Progress Software Telerik UI for ASP.NET AJAX

RadAsyncUpload Upload Metadata Timing Oracle Vulnerability in Telerik UI for ASP.NET AJAX

CVSS 3.1

7.5High

Official description

In Progress® Telerik® UI for AJAX prior to v2026.2.708, RadAsyncUpload upload metadata processing may leak cryptographic validity through measurable timing differences, enabling remote attackers to recover protected metadata values.

CVSS scores

Score	Version	Source	Vector
7.5High	3.1	CVEProject cvelistV5 (CNA) (ProgressSoftware)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`

Affected products

Vendor	Product	Versions	Source
Progress Software	Telerik UI for ASP.NET AJAX	2010.1.309 ≤ v < 2026.2.708	CVEProject cvelistV5 (CNA)

References and advisories

https://www.telerik.com/products/aspnet-ajax/documentation/knowledge-base/kb-security-rau-timing-oracle-CVE-2026-13183 vendor-advisory

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Details

Published: 2026-07-22
Last updated: 2026-07-22
State: Published
Assigner (CNA): ProgressSoftware

Exploit prediction (EPSS)

0.49%

Probability of exploitation in 30 days

42.9%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: None
Technical impact: Partial

Weaknesses (CWE)

CWE-208
Observable Timing Discrepancy