CVE-2025-66908

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.

• CWE-434

• https://github.com/Xzzz111/public_cve_report/blob/main/CVE-2025-66908_report.mdExploit, Third Party Advisory
• https://github.com/turms-im/turmsProduct
• https://github.com/turms-im/turms/blob/develop/turms-ai-serving/src/main/java/im/turms/ai/domain/ocr/controller/OcrController.javaProduct
• https://github.com/Xzzz111/public_cve_report/blob/main/CVE-2025-66908_report.mdExploit, Third Party Advisory

Published

Dec 19, 2025

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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