CVE-2026-85671

Summary

QAnything 2.0.0 contains an authentication bypass vulnerability in the /api/local_doc_qa/get_file_base64 and /api/local_doc_qa/get_doc endpoints that allows unauthenticated attackers to access any uploaded file or document. Attackers can enumerate file identifiers through unauthenticated endpoints and retrieve base64-encoded files or parsed document chunks without ownership verification to disclose cross-tenant knowledge base content.

Affected Software

Weaknesses

• CWE-306: Missing Authentication for Critical Function

References

• https://github.com/netease-youdao/QAnything/issues/670
• https://github.com/netease-youdao/QAnything
• https://github.com/netease-youdao/QAnything/blob/v2.0.0/qanything_kernel/qanything_server/handler.py
• https://www.vulncheck.com/advisories/qanything-2.0.0-unauthenticated-cross-user-file-disclosure

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