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CVE-2026-18672— RadImageEditor ClientState Unauthenticated Arbitrary File Read Vulnerability in Telerik UI for ASP.NET AJAX

Quick assessment

Affected
Progress Software Telerik UI for ASP.NET AJAX
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Progress Telerik UI for AJAX是Progress公司的一款提供丰富UI组件的AJAX前端库。 Progress Telerik UI for AJAX 2026.3.812之前版本存在路径遍历漏洞，该漏洞源于对RadImageEditor中客户端提供的状态验证不足，可能导致攻击者影响控件图像缓存返回的文件，从而暴露预期图像目录之外的文件内容。

CVSS 7.5 · High EPSS 0.36% · P28

Affected Version Matrix 1

VendorProduct Version RangeStatus
Progress Software Telerik UI for ASP.NET AJAX 2011.2.712< 2026.3.812 affected
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I. Basic Information for CVE-2026-18672

Vulnerability Information
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Vulnerability Title
RadImageEditor ClientState Unauthenticated Arbitrary File Read Vulnerability in Telerik UI for ASP.NET AJAX
Source: CVE Program / CVE List V5
Vulnerability Description
In Progress® Telerik® UI for AJAX prior to v2026.3.812, insufficient validation of client-supplied state in RadImageEditor may allow an attacker to influence which file is returned by the control's image cache, potentially exposing file contents outside the intended image directories.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Progress Telerik UI for AJAX 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Progress Telerik UI for AJAX是Progress公司的一款提供丰富UI组件的AJAX前端库。 Progress Telerik UI for AJAX 2026.3.812之前版本存在路径遍历漏洞，该漏洞源于对RadImageEditor中客户端提供的状态验证不足，可能导致攻击者影响控件图像缓存返回的文件，从而暴露预期图像目录之外的文件内容。
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

Vendor Product Affected Versions CPE Subscribe
Progress Software Telerik UI for ASP.NET AJAX 2011.2.712 ~ 2026.3.812 -

II. Public POCs for CVE-2026-18672

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III. Intelligence Information for CVE-2026-18672

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Vendor Advisories for CVE-2026-18672 (1)

IV. Related Vulnerabilities

Same product: Telerik UI for ASP.NET AJAX
Same vendor: Progress Software
Same weakness: CWE-22

V. Comments for CVE-2026-18672

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