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CVE-2026-13188— DialogHandler Parameters Tampering Vulnerability in Telerik UI for ASP.NET AJAX

CVSS 5.9 · Medium EPSS 0.11% · P2

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProductVersion RangeStatus
Progress SoftwareTelerik UI for ASP.NET AJAX2011.2.712< 2026.2.708affected
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I. Basic Information for CVE-2026-13188

Vulnerability Information
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Vulnerability Title
DialogHandler Parameters Tampering Vulnerability in Telerik UI for ASP.NET AJAX
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对数据真实性的验证不充分
Source: CVE Program / CVE List V5
Vulnerability Title
Progress Software Progress Telerik UI for AJAX 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Progress Telerik UI for AJAX是Progress Software公司的一套Web界面组件库。 Progress Software Progress Telerik UI for AJAX 2026.2.708之前版本存在输入验证错误漏洞，该漏洞源于DialogHandler请求参数可能被篡改，从而改变对话框服务器端行为并导致链式利用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Progress SoftwareTelerik UI for ASP.NET AJAX 2011.2.712 ~ 2026.2.708 -

II. Public POCs for CVE-2026-13188

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III. Intelligence Information for CVE-2026-13188

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Vendor Advisories for CVE-2026-13188 (1)

Same Patch Batch · Progress Software · 2026-07-22 · 13 CVEs total

CVE-2026-131858.1 HIGHPersistenceFramework Cookie Deserialization Vulnerability in Telerik UI for ASP.NET AJAX
CVE-2026-131878.1 HIGHDialogHandler Provider Type Tampering Vulnerability in Telerik UI for ASP.NET AJAX
CVE-2026-131818.1 HIGHRadAsyncUpload AsyncUploadTypeName Type Resolution Vulnerability in Telerik UI for ASP.NET
CVE-2026-131868.1 HIGHAppDataStorageProvider Path Traversal Deserialization Vulnerability in Telerik UI for ASP.
CVE-2026-131908.1 HIGHPersistenceFramework Unsafe Type Resolution Vulnerability in Telerik UI for ASP.NET AJAX
CVE-2026-131897.5 HIGHSpellChecker DictionaryLanguage Path Traversal Vulnerability in Telerik UI for ASP.NET AJA
CVE-2026-131847.5 HIGHRadAsyncUpload Default HMAC Key Fallback Vulnerability in Telerik UI for ASP.NET AJAX
CVE-2026-131827.5 HIGHRadAsyncUpload Client-State Decrypt-vs-Parse Oracle Vulnerability in Telerik UI for ASP.NE
CVE-2026-131837.5 HIGHRadAsyncUpload Upload Metadata Timing Oracle Vulnerability in Telerik UI for ASP.NET AJAX
CVE-2026-149326.5 MEDIUMUnauthenticated File Read and Deletion via Hardcoded Encryption Key in RadChart
CVE-2026-131926.5 MEDIUMRadEditor PDF Export SSRF Vulnerability in Telerik UI for ASP.NET AJAX
CVE-2026-148655.3 MEDIUMXXE Denial of Service via RadLayoutBuilder Client State in Telerik UI for ASP.NET AJAX

IV. Related Vulnerabilities

Same product: Telerik UI for ASP.NET AJAX
Same vendor: Progress Software
Same weakness: CWE-345

V. Comments for CVE-2026-13188

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