What is CVE-2023-36258?

CVE-2023-36258 is a critical-severity vulnerability in Langchain, classified under Code Injection. CVSS score: 9.8/10. Published 2023-07-03.

How severe is CVE-2023-36258?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2023-36258 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Langchain

CVE-2023-36258

An issue in LangChain before 0.0.236 allows an attacker to execute arbitrary code because Python code with os.system, exec, or eval can be used.

Vulnerability class: RCE (Remote Code Execution)

Published 2023-07-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (63.9th percentile), scored 2026-10-08.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Langchain — versions 0.0.199

Weakness classification (CWE)

CWE-94 — Code Injection

Public proof-of-concept exploits

References

github.com/hwchase17/langchain/issues/5872 (Exploit, Mitigation, Issue Tracking)

Frequently asked questions

What is CVE-2023-36258?: CVE-2023-36258 is a critical-severity vulnerability in Langchain, classified under Code Injection. CVSS score: 9.8/10. Published 2023-07-03.
How severe is CVE-2023-36258?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-36258 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.