https://vulnerability.circl.lu/sightings/feed 2026-09-28T00:49:57.481499+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent sightings. https://vulnerability.circl.lu/sighting/39254ccc-f496-4358-8cb5-a89b2761484b/export 2026-09-28T00:49:57.504015+00:00 Automation user https://vulnerability.circl.lu/user/automation {"uuid": "39254ccc-f496-4358-8cb5-a89b2761484b", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-51884", "type": "seen", "source": "https://gist.github.com/Ro1ME/da028c9ce13dd888e265b9bef01d6eca", "content": "# CVE-2026-51884\n\n**Type:** Directory Traversal\n**Product:** Langchain-Chatchat\n**Affected versions:** 0.3.1\n**Affected component:** `libs/chatchat-server/chatchat/server/chat/file_chat.py:file_chat-_parse_files_in_thread-a-full-service-post-knowledge-base-upload-temp`\n**Reference:** https://github.com/chatchat-space/Langchain-Chatchat/issues/5466\n\n## Description\n\nThe /knowledge_base/upload_temp_docs temporary document upload endpoint in Langchain Chatchat 0.3.1 is vulnerable to path traversal. By crafting malicious filenames, an attacker can write files to arbitrary locations on the server, bypassing the intended restrictions on the temporary directory.\n\n## Discoverer\n\nRo1ME\n", "creation_timestamp": "2026-09-26T04:04:46.000000Z"} 2026-09-26T04:04:46+00:00