All vulnerabilities
CVE-2026-75128

Langchain-Chatchat through 0.3.1.3 Unauthenticated RCE via /tools/call Endpoint

chatchat-space Langchain-Chatchat
Open in ThreatlineRecord JSON
CVSS
9.3Critical
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 20 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.52%Chance of exploitation activity in the next 30 days, higher than 43% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published20 Oct 2026Updated 20 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Description

Langchain-Chatchat through 0.3.1.3 exposes a POST /tools/call API endpoint that invokes any registered tool by name without authentication, leaving the always-registered shell tool callable. Remote attackers can send a single request naming the shell tool to execute arbitrary OS commands as the server user (root in the shipped Docker image).

Text from CVE List

Affected versions 1

  • Langchain-Chatchataffected: all versions through 0.3.1.3CVE List

References 3