High severity8.1NVD Advisory· Published Jul 22, 2026· Updated Aug 6, 2026

CVE-2026-13181

Description

In Progress® Telerik® UI for AJAX prior to v2026.2.708, forged upload metadata can influence AsyncUploadTypeName processing and trigger unsafe attacker-controlled type resolution, enabling remote code execution in affected deployments.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Progress (organisation)/Telerik Ui For Asp.net Ajax2 versions
cpe:2.3:a:progress:telerik_ui_for_asp.net_ajax:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:progress:telerik_ui_for_asp.net_ajax:*:*:*:*:*:*:*:*range: >=2010.1309,<2026.2.708
- (no CPE)range: <2026.2.708

Patches

Vulnerability mechanics

References

www.telerik.com/products/aspnet-ajax/documentation/knowledge-base/kb-security-rau-asyncuploadtypename-deserialization-CVE-2026-13181nvdVendor AdvisoryMitigation

News mentions

Telerik UI Padding-Oracle Bug Chained to Unauthenticated RCE — Public Exploit Released
The Hacker News · Sep 7, 2026
Telerik Flaw Chain Lets Unauthenticated Attackers Turn Padding Oracle Into Remote Code Execution
Cyber Security News · Sep 7, 2026

cvss	0.526
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000