CVE-2025-6853: Langchain-Chatchat Path Traversal Vulnerability
Langchain-Chatchat
A path traversal vulnerability exists in the upload_temp_docs function of Langchain-Chatchat up to version 0.3.1. Remote attackers can manipulate the flag argument to trigger the vulnerability.
disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why
- CVSS
- 6.3
- EPSS
- 0.01 · top 51% · 2026-11-13
- fix status
- Fix status unknown
- first report
- 29 Jun 2025
- last update
- 29 Jun 2025
- CVE ids
Timeline · 1
Sources · 1
Advisories and databases
- 2025-06-29CVE-2025-6853: A vulnerability classified as critical has been found in chatchat-space Langchain-Chatchat up to 0.3.1.NVD · nvd.nist.gov/vuln/detail/CVE-2025-6853
Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.
Classification
- lane
- Patch now
- AI role
- Attack on AI
- categories
- Infrastructure vulnerability
- severity
- 2 · Disclosed vulnerability
- fix status
- Fix status unknown
- targets
- Framework / tooling
- owasp llm top 10
- LLM03:2025 Supply Chain
- mitre atlas
- no technique for these categories
- dates
- happened 29 Jun 2025 · first reported 29 Jun 2025
- origin
- NVDVulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
- record
- confidence 0.95 · created 2026-10-18 10:04Z · updated 2026-10-18 10:04Z
Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned
Copy a brief
This record as a short Markdown brief, for a ticket, a chat or a coding agent.
the brief as text
# CVE-2025-6853: Langchain-Chatchat Path Traversal Vulnerability https://gcdradar.vercel.app/incidents/cve-2025-6853-langchain-chatchat-path-traversal-vulnerabilit · AIR-2025-0433 · closed 2025-06-29 - Lane: Patch now - Severity: 2 (Disclosed vulnerability) - Fix status: Fix status unknown - First reported: 2025-06-29 - AI role: Attack on AI - Products: Langchain-Chatchat - CVE ids: CVE-2025-6853 - CVSS: 6.3 ## Summary A path traversal vulnerability exists in the upload_temp_docs function of Langchain-Chatchat up to version 0.3.1. Remote attackers can manipulate the flag argument to trigger the vulnerability. ## What to do No action recorded; read the sources below and the vendor's advisory. ## Latest updates - 2025-06-29: CVE-2025-6853: A vulnerability classified as critical has been found in chatchat-space Langchain-Chatchat up to 0.3.1. (https://nvd.nist.gov/vuln/detail/CVE-2025-6853) ## Sources - 2025-06-29 NVD: CVE-2025-6853: A vulnerability classified as critical has been found in chatchat-space Langchain-Chatchat up to 0.3.1. https://nvd.nist.gov/vuln/detail/CVE-2025-6853 Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.
Related
- closed5.5Langchain-Chatchat CVE-2025-6855: Path traversal vulnerability found in Langchain-Chatchat
Patch now · Disclosed · since 29 Jun 2025 · CVE-2025-6855
AI - closed4.3Langchain-Chatchat CVE-2025-6854: Langchain-Chatchat Assistant Files Path Traversal
Patch now · Disclosed · since 29 Jun 2025 · CVE-2025-6854
AI - closed9.8Langchain-Chatchat CVE-2026-75128: Langchain-Chatchat unauthenticated tool call endpoint allows arbitrary OS command execution
Patch now · Disclosed · since 20 Oct 2026 · CVE-2026-75128
AI - closed9.1Langchain-Chatchat CVE-2026-51882: Path traversal vulnerability in Langchain-Chatchat file upload
Patch now · Disclosed · since 1 Oct 2026 · CVE-2026-51882
AI - closed9.1Langchain-Chatchat CVE-2026-51883: Path traversal vulnerability in Langchain-Chatchat
Patch now · Disclosed · since 1 Oct 2026 · CVE-2026-51883
AI - closed2.6Langchain-Chatchat CVE-2026-7847: Insufficiently random values in Langchain-Chatchat file ID generation
Patch now · Disclosed · since 5 May 2026 · CVE-2026-7847
AI