CVE-2026-75128 Langchain-Chatchat - Command Injection

Langchain-Chatchat <= 0.3.1.3 contains a command injection caused by unauthenticated access to the /tools/call API endpoint invoking the shell tool, letting remote attackers execute arbitrary OS commands as root, exploit requires no authentication.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Command Injection
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
20 October 2026
Updated
20 October 2026
Weakness
CWE-306

Vendor fix

Update to the latest version of Langchain-Chatchat.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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