CVE-2023-39659
LangChain vulnerable to arbitrary code execution
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2023-39659- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-74
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2023-39659- Updated
- 2026-11-02
EUVDEUVD-2023-0115 No score
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.
- Record
EUVD-2023-0115- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-prgp-w7vf-ch62
LangChain vulnerable to arbitrary code execution
An issue in langchain langchain-ai before version 0.0.325 allows a remote attacker to execute arbitrary code via a crafted script to the PythonAstREPLTool._run component.
- Record
GHSA-prgp-w7vf-ch62- CVSS 4.0
- 9.3 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-74
- Updated
- 2026-11-02
OSVGHSA-prgp-w7vf-ch62
LangChain vulnerable to arbitrary code execution
An issue in langchain langchain-ai before version 0.0.325 allows a remote attacker to execute arbitrary code via a crafted script to the PythonAstREPLTool._run component.
- Record
GHSA-prgp-w7vf-ch62- CVSS 4.0
- 9.3 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-74
- Updated
- 2026-11-02
OSVPYSEC-2023-147
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.
- Record
PYSEC-2023-147- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSV No score
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.
- Record
CVE-2023-39659- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
langchainPyPI |
before 0.0.325 | 0.0.325 |
langchainPyPI |
before 0.0.325, plus listed versions 0.0.10.0.100.0.1000.0.1010.0.101rc0 Show 45 moreShow less0.0.1020.0.102rc00.0.1030.0.1040.0.1050.0.1060.0.1070.0.1080.0.1090.0.110.0.1100.0.1110.0.1120.0.1130.0.1140.0.1150.0.1160.0.1170.0.1180.0.1190.0.120.0.1200.0.1210.0.1220.0.1230.0.1240.0.1250.0.1260.0.1270.0.1280.0.1290.0.130.0.1300.0.1310.0.1320.0.1330.0.1340.0.1350.0.1360.0.1370.0.1380.0.1390.0.140.0.1400.0.141 |
0.0.325 |
langchainPyPI |
before 0.0.233, plus listed versions 0.0.10.0.100.0.1000.0.1010.0.101rc0 Show 45 moreShow less0.0.1020.0.102rc00.0.1030.0.1040.0.1050.0.1060.0.1070.0.1080.0.1090.0.110.0.1100.0.1110.0.1120.0.1130.0.1140.0.1150.0.1160.0.1170.0.1180.0.1190.0.120.0.1200.0.1210.0.1220.0.1230.0.1240.0.1250.0.1260.0.1270.0.1280.0.1290.0.130.0.1300.0.1310.0.1320.0.1330.0.1340.0.1350.0.1360.0.1370.0.1380.0.1390.0.140.0.1400.0.141 |
0.0.233 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-39659 is a critical vulnerability (CVSS 9.8) in Langchain, published August 15, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.53%, the 74th percentile. Fixed in langchain 0.0.325.
References
github.com/langchain-ai/langchain/issues/7700
nvd.nist.gov/vuln/detail/CVE-2023-39659
Left out here: 460 versions. The JSON record has them.