CVE-2026-51883

CriticalCVSS 9.1/10Last modified Oct 5, 2026

Description

The knowledge base creation and document upload interfaces in Langchain-Chatchat 0.3.0;0.3.1 is vulnerable to path traversal. An attacker can inject path traversal sequences (such as `..\`) into the `knowledge_base_name` parameter to write knowledge base content to arbitrary locations outside the configured knowledge base root directory.

Metrics

CVSS 3.1 9.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-22

Affected software

No affected versions have been published.

Timeline

Published: Oct 1, 2026
Last modified: Oct 5, 2026
NVD status: Deferred

Related CVEs from 2026

CVE-2026-518849.8The /knowledge_base/upload_temp_docs temporary document upload endpoint in Langchain Chatchat 0.3.1 is vulnerable to path traversal. By craf CVE-2026-518869.8langflow-ai langflow v1.9.3 is affected by: Code Injection. The impact is: execute arbitrary code (remote). The component is: src/backend/ba CVE-2026-518887.5langflow-ai langflow v1.8.4 is affected by: Directory Traversal. The impact is: Arbitrary file write outside the intended workspace or stora CVE-2026-51899.8CWE-798: Use of Hard-coded Credentials in Sonatype Nexus Repository Manager versions 3.0.0 through 3.70.5 allows an unauthenticated attacker CVE-2026-518926.5infiniflow ragflow 0.24.0 is vulnerable to Incorrect Access Control via /v1/document/get/<doc_id>.CVE-2026-518939.8infiniflow ragflow 0.24.0 is vulnerable to Incorrect Access Control via trace_mindmap. An externally reachable path accepts a caller-selecte CVE-2026-518946.5infiniflow ragflow 0.24.0 is vulnerable to Incorrect Access Control via run_mindmap. A reachable path accepts a caller-selected object or te CVE-2026-518956.5Ragflow 0.24.0 and prior contains improper access control in update_metadata_setting (api/apps/kb_app.py). Depending on the exposed entry, a CVE-2026-518966.5infiniflow ragflow 0.25.3 contains improper access control in resume (api/apps/connector_app.py). Depending on the exposed entry, an attacke CVE-2026-518979.8RAGFlow 0.24.0 contains improper access control in get_dataset (api/apps/evaluation_app). Depending on the exposed entry, an attacker can tr CVE-2026-518989.8sinaptik-ai pandas-ai 3.0.0 is vulnerable to Code Injection in CodeExecutor.execute.CVE-2026-518994.3In SuperAGI v0.0.14 and prior, controller endpoints (/api/agents/create, /api/agents/schedule, /api/agents/delete, /api/agents/edit_schedule