What’s Vulnerable › Vulnerabilities

CVE-2026-51882

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-01 · updated 2026-10-07
• Weakness: CWE-22

Description

The OpenAI-compatible file upload endpoint `/v1/files` in Langchain-Chatchat 0.3.0 is vulnerable to path traversal. An attacker can write files to arbitrary locations outside the `openai_files` directory by crafting malicious filenames.

References

• https://gist.github.com/Ro1ME/f80ac458836b59adb9c6ceff3993f7f3
• https://github.com/chatchat-space/Langchain-Chatchat/issues/5468
• https://gist.github.com/Ro1ME/f80ac458836b59adb9c6ceff3993f7f3
• https://github.com/chatchat-space/Langchain-Chatchat/issues/5468

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