Answer in brief
CVE-2026-75128 records a Critical severity (CVSS 9.3) vulnerability in Langchain-Chatchat through 0.3.1.3 Unauthenticated RCE via /tools/call Endpoint. The current sources do not mark it as known exploited. The current feed maps chatchat-space/Langchain-Chatchat (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps chatchat-space/Langchain-Chatchat (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| chatchat-space/Langchain-Chatchatgeneric | >=0 <=0.3.1.3 | Not reported |
Published upstream
Oct 20, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 20, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 20, 2026
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).
Quoted source text, attributed separately from HOL analysis.