Langchain-Chatchat through 0.3.1.3 Unauthenticated RCE via /tools/call Endpoint
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).
CVE-2026-75128
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-75128
Langchain-Chatchat
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/chatchat-space/Langchain-Chatchat",
"vendor": "chatchat-space",
"product": "Langchain-Chatchat",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "custom",
"lessThanOrEqual": "0.3.1.3"
}
],
"packageURL": "pkg:pypi/langchain-chatchat",
"collectionURL": "https://pypi.org",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-75128
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #42206 · Revision 1
- Added to Heist Feed
- Publisher date