RadImageEditor ClientState Unauthenticated Arbitrary File Read Vulnerability in Telerik UI for ASP.NET AJAX

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.

DialogHandler UploadPaths Tampering Vulnerability in Telerik UI for ASP.NET AJAX

In Progress® Telerik® UI for AJAX prior to v2026.3.812, insufficient integrity protection of dialog request parameters used by the RadEditor file browser may allow an attacker who has obtained certain application encryption key material to alter the folders the file browser reads from, writes to, and uploads into, potentially resulting in remote code execution.

RadAsyncUpload AsyncUploadTypeName Type Resolution Vulnerability in Telerik UI for ASP.NET AJAX

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.

RadAsyncUpload Client-State Decrypt-vs-Parse Oracle Vulnerability in Telerik UI for ASP.NET AJAX

In Progress® Telerik® UI for AJAX prior to v2026.2.708, RadAsyncUpload client-state processing can distinguish decrypt failures from invalid-JSON parse failures, creating an oracle that reveals protected metadata values to remote attackers.

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

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.

RadAsyncUpload Default HMAC Key Fallback Vulnerability in Telerik UI for ASP.NET AJAX

In Progress® Telerik® UI for AJAX prior to v2026.2.708, when Telerik.Upload.ConfigurationHashKey is absent and machineKey is not explicitly configured, upload metadata integrity protection may fall back to a predictable default key, enabling attackers to forge protected upload metadata and unlock further exploit chains.

PersistenceFramework Cookie Deserialization Vulnerability in Telerik UI for ASP.NET AJAX

In Progress® Telerik® UI for AJAX prior to v2026.2.708, applications using cookie-based storage in RadPersistenceManager or RadDockLayout deserialize attacker-controlled cookie content, allowing unauthenticated remote code execution.

AppDataStorageProvider Path Traversal Deserialization Vulnerability in Telerik UI for ASP.NET AJAX

In Progress® Telerik® UI for AJAX prior to v2026.2.708, a path traversal vulnerability in the file-based persistence storage provider can be exploited when the storage key is derived from user-controlled input, enabling attacker-controlled deserialization and remote code execution.

DialogHandler Provider Type Tampering Vulnerability in Telerik UI for ASP.NET AJAX

In Progress® Telerik® UI for AJAX prior to v2026.2.708, DialogHandler provider type input may be tampered with, potentially altering dialog processing and enabling chained exploitation.

DialogHandler Parameters Tampering Vulnerability in Telerik UI for ASP.NET AJAX

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.

SpellChecker DictionaryLanguage Path Traversal Vulnerability in Telerik UI for ASP.NET AJAX

In Progress® Telerik® UI for AJAX prior to v2026.2.708, insufficient validation of the language parameter in the spell check handler may allow an attacker to influence server-side file path resolution and trigger unintended server-side requests.

PersistenceFramework Unsafe Type Resolution Vulnerability in Telerik UI for ASP.NET AJAX

In Progress® Telerik® UI for AJAX prior to v2026.2.708, a deserialization vulnerability in the persistence utilities allows unsafe type instantiation from attacker-influenced persisted state, which can lead to remote code execution.

RadEditor PDF Export SSRF Vulnerability in Telerik UI for ASP.NET AJAX

In Progress® Telerik® UI for AJAX prior to v2026.2.708, insufficient validation of content submitted to the RadEditor PDF export feature may allow an authenticated attacker to trigger server-side requests to arbitrary hosts, resulting in outbound network connections and potential exposure of Windows authentication credentials.

XXE Denial of Service via RadLayoutBuilder Client State in Telerik UI for ASP.NET AJAX

In Progress® Telerik® UI for AJAX prior to v2026.2.708, the internal LayoutBuilder control processes client-state XML without disabling DTD processing, allowing unauthenticated denial of service via recursive XML entity expansion.

Unauthenticated File Read and Deletion via Hardcoded Encryption Key in RadChart

In Progress® Telerik® UI for AJAX prior to v2026.2.708, the obsolete RadChart component's ChartImage.axd handler is vulnerable to unauthenticated file read and deletion of image-extension files within the application directory.

Uncontrolled Resource Consumption Vulnerability in Telerik UI for ASP.NET AJAX

In Progress® Telerik® UI for AJAX prior to 2026.1.421, RadAsyncUpload contains an uncontrolled resource consumption vulnerability that allows file uploads to exceed the configured maximum size due to missing cumulative size enforcement during chunk reassembly, leading to disk space exhaustion.

Deserialization of Untrusted Data Vulnerability in Telerik UI for ASP.NET AJAX

In Progress® Telerik® UI for AJAX versions 2024.4.1114 through 2026.1.421, the RadFilter control is vulnerable to insecure deserialization when restoring filter state if the state is exposed to the client. If an attacker tampers with this state, a server-side remote code execution is possible.

Progress Telerik UI for ASP.NET AJAX before R2 2017 SP2 does not properly restrict user input to RadAsyncUpload, which allows remote attackers to perform arbitrary file uploads or execute arbitrary code.

Insufficient Entropy Vulnerability in Telerik UI for ASP.NET AJAX

In Progress® Telerik® UI for AJAX, versions prior to 2026.1.225, an insufficient entropy vulnerability exists in RadAsyncUpload, where a predictable temporary identifier, based on timestamp and filename, can enable collisions and file content tampering.

Unsafe Reflection Vulnerability in Telerik UI for ASP.NET AJAX

In Progress® Telerik® UI for AJAX, versions 2011.2.712 to 2025.1.218, an unsafe reflection vulnerability exists that may lead to an unhandled exception resulting in a crash of the hosting process and denial of service.