EUVD-2026-71127
GHSA-mq4x-r3rg-g5rq
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable with no auth or complexity; pure confidentiality impact, no integrity or availability effect; no scope change.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Unauthenticated cross-tenant document disclosure in QAnything 2.0.0 allows any network attacker to retrieve base64-encoded files or parsed document chunks from any knowledge base without credentials or ownership verification. The /api/local_doc_qa/get_file_base64 and /api/local_doc_qa/get_doc endpoints lack authentication guards entirely (CWE-306), and file identifiers can be enumerated via separate unauthenticated endpoints, making full corpus extraction feasible. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions are required for exploitation. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 8.7 with vector AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N accurately reflects the threat model: network-reachable, zero-barrier, confidentiality-only impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patched version has been independently confirmed from the available references at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all QAnything 2.0.0 instances in your environment and assess what sensitive documents or knowledge bases are stored on each system. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
HTTP Request Smuggling vulnerability in netease-youdao/qanything version 1.4.1 allows attackers to exploit inconsistenci
netease-youdao/qanything version 1.4.1 contains a vulnerability where unsafe data obtained from user input is concatenat
A Cross-Site Request Forgery (CSRF) vulnerability exists in the backend API of netease-youdao/qanything, as of commit d9
A Denial of Service (DoS) vulnerability was discovered in the file upload feature of netease-youdao/qanything version v2
A local file inclusion vulnerability exists in netease-youdao/qanything version v2.0.0. Rated high severity (CVSS 7.5),
A stored Cross-Site Scripting (XSS) vulnerability exists in netease-youdao/QAnything. Rated medium severity (CVSS 6.1),
qanything_kernel/connector/database/mysql/mysql_client.py in qanything.ai QAnything before 1.2.0 allows SQL Injection. R
A CORS misconfiguration vulnerability exists in netease-youdao/qanything version 1.4.1. Rated high severity (CVSS 7.5),
Same technique Authentication Bypass
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External POC / Exploit Code
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