Turms AI-Serving module up to 0.10.0-SNAPSHOT OcrController.java unrestricted upload

Summaryinfo

A vulnerability marked as critical has been reported in Turms AI-Serving module up to 0.10.0-SNAPSHOT. The affected element is an unknown function of the file turms-ai-serving/src/main/java/im/turms/ai/domain/ocr/controller/OcrController.java. The manipulation leads to unrestricted upload. This vulnerability is uniquely identified as CVE-2025-66908. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Turms AI-Serving module up to 0.10.0-SNAPSHOT. It has been rated as critical. This issue affects an unknown code of the file turms-ai-serving/src/main/java/im/turms/ai/domain/ocr/controller/OcrController.java. The manipulation with an unknown input leads to a unrestricted upload vulnerability. Using CWE to declare the problem leads to CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Turms AI-Serving module v0.10.0-SNAPSHOT and earlier contains an improper file type validation vulnerability in the OCR image upload functionality. The OcrController in turms-ai-serving/src/main/java/im/turms/ai/domain/ocr/controller/OcrController.java uses the @FormData(contentType = MediaTypeConst.IMAGE) annotation to restrict uploads to image files, but this constraint is not properly enforced. The system relies solely on client-provided Content-Type headers and file extensions without validating actual file content using magic bytes (file signatures). An attacker can upload arbitrary file types including executables, scripts, HTML, or web shells by setting the Content-Type header to "image/*" or using an image file extension. This bypass enables potential server-side code execution, stored XSS, or information disclosure depending on how uploaded files are processed and served.

The identification of this vulnerability is CVE-2025-66908 since 12/08/2025. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/19/2025). The attack technique deployed by this issue is T1608.002 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Artificial Intelligence Software

Vendor

• Turms

Name

• AI-Serving module

Version

• 0.10.0-SNAPSHOT

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CPE 2.2info

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