Progress Telerik UI for ASP.NET AJAX up to 2026.2.707 DialogHandler input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k2.02+

Summaryinfo

A vulnerability, which was classified as critical, was found in Progress Telerik UI for ASP.NET AJAX up to 2026.2.707. This issue affects some unknown processing of the component DialogHandler. Executing a manipulation can lead to input validation. This vulnerability is tracked as CVE-2026-13188. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in Progress Telerik UI for ASP.NET AJAX up to 2026.2.707 and classified as critical. This vulnerability affects some unknown functionality of the component DialogHandler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In Progress® Telerik® UI for AJAX prior to v2026.2.708, DialogHandler request parameters may be tampered with, potentially altering dialog server-side behavior and enabling chained exploitation.

The advisory is available at telerik.com. This vulnerability was named CVE-2026-13188 since 06/24/2026. The exploitation appears to be easy. The attack can be initiated remotely. The technical details are unknown and an exploit is not available.

Upgrading to version 2026.2.708 eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Upgrade: Telerik UI for ASP.NET AJAX 2026.2.708

Timelineinfo

06/24/2026 CVE reserved
07/22/2026 +28 days Advisory disclosed
07/22/2026 +0 days VulDB entry created
07/22/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: telerik.com
Status: Confirmed

CVE: CVE-2026-13188 (🔒)
GCVE (CVE): GCVE-0-2026-13188
GCVE (VulDB): GCVE-100-382342

Entryinfo

Created: 07/22/2026 16:18
Changes: 07/22/2026 16:18 (53)
Complete: 🔍
Cache ID: 216::103

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