What’s Vulnerable › Vulnerabilities

CVE-2023-39659

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-08-15 · updated 2026-06-17
• Weakness: CWE-74

Description

An issue in langchain langchain-ai v.0.0.232 and before allows a remote attacker to execute arbitrary code via a crafted script to the PythonAstREPLTool._run component.

Affected products

• langchain-ai/langchain: through 0.0.232

References

• https://github.com/langchain-ai/langchain/issues/7700
• https://github.com/langchain-ai/langchain/pull/5640
• https://github.com/langchain-ai/langchain/issues/7700
• https://github.com/langchain-ai/langchain/pull/5640

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