LangChain Experimental vulnerable to arbitrary code executionGHSA-v8vj-cv27-hjv8
CRITICALFix: langchain-ai/langchain@de9a6cdGHSA-v8vj-cv27-hjv8 is a critical-severity (CVSS 9.8) CWE-749 vulnerability in langchain-experimental. A fix is available for langchain-experimental — see the affected versions and patch details below.
Exploitation Status
No confirmed exploitation observed yet
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- A successful exploit gives an attacker total control of the affected component, not partial access.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for GHSA-v8vj-cv27-hjv8.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
langchain-experimentalReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
langchain_experimental (aka LangChain Experimental) before 0.0.52, part of LangChain before 0.1.8, allows an attacker to bypass the CVE-2023-44467 fix and execute arbitrary code via the __import__, __subclasses__, __builtins__, __globals__, __getattribute__, __bases__, __mro__, or __base__ attribute in Python code. These are not prohibited by pal_chain/base.py.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | langchain-experimental | all versions | 0.0.52pip install --upgrade 'langchain-experimental==0.0.52' |
Affected Products
langchain-experimentallangchainDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for langchain-experimental, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update langchain-experimental to 0.0.52 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-v8vj-cv27-hjv8 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
Frequently Asked Questions
Is GHSA-v8vj-cv27-hjv8 in your dependencies?
Find it across PyPI, including transitive dependencies.