CVE-2023-36281

langchain vulnerable to arbitrary code execution

9.8 CriticalPublic exploitFix available

An issue in langchain v.0.0.171 allows a remote attacker to execute arbitrary code via a JSON file to load_prompt. This is related to subclasses or a template.

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

3.44%Up 3.4 points since Aug 23, 2023

What each source reports

NVD Score used 9.8

An issue in langchain v.0.0.171 allows a remote attacker to execute arbitrary code via a JSON file to load_prompt. This is related to subclasses or a template.

Record: CVE-2023-36281
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-94
Updated: 2026-11-02

CVE List 9.8

An issue in langchain v.0.0.171 allows a remote attacker to execute arbitrary code via a JSON file to load_prompt. This is related to subclasses or a template.

Record: CVE-2023-36281
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-94
Updated: 2026-11-02

EUVDEUVD-2023-0116 9.8

An issue in langchain v.0.0.171 allows a remote attacker to execute arbitrary code via a JSON file to load_prompt. This is related to subclasses or a template.

Record: EUVD-2023-0116
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-03

GitHub AdvisoriesGHSA-7gfq-f96f-g85j 9.3

langchain vulnerable to arbitrary code execution

An issue in langchain v.0.0.171 allows a remote attacker to execute arbitrary code via the via the a json file to the load_prompt parameter. This is related to __subclasses__ or a template.

Record: GHSA-7gfq-f96f-g85j
CVSS 4.0: 9.3 CriticalCVSS: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 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-94
Updated: 2026-11-02

OSV 9.8

An issue in langchain v.0.0.171 allows a remote attacker to execute arbitrary code via a JSON file to load_prompt. This is related to subclasses or a template.

Record: CVE-2023-36281
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVGHSA-7gfq-f96f-g85j 9.3

langchain vulnerable to arbitrary code execution

An issue in langchain v.0.0.171 allows a remote attacker to execute arbitrary code via the via the a json file to the load_prompt parameter. This is related to __subclasses__ or a template.

Record: GHSA-7gfq-f96f-g85j
CVSS 4.0: 9.3 CriticalCVSS: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 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-94
Updated: 2026-11-02

OSVPYSEC-2023-151 9.8

An issue in langchain v.0.0.171 allows a remote attacker to execute arbitrary code via the via the a json file to the load_prompt parameter.

Record: PYSEC-2023-151
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

langchain

Affected packages

Affected packages
Package	Affected	Fixed
`langchain` PyPI	before 0.0.312	0.0.312
`langchain` PyPI	before 0.0.312, plus listed versions 0.0.10.0.100.0.1000.0.1010.0.101rc0 Show 45 moreShow less 0.0.1020.0.102rc00.0.1030.0.1040.0.1050.0.1060.0.1070.0.1080.0.1090.0.110.0.1100.0.1110.0.1120.0.1130.0.1140.0.1150.0.1160.0.1170.0.1180.0.1190.0.120.0.1200.0.1210.0.1220.0.1230.0.1240.0.1250.0.1260.0.1270.0.1280.0.1290.0.130.0.1300.0.1310.0.1320.0.1330.0.1340.0.1350.0.1360.0.1370.0.1380.0.1390.0.140.0.1400.0.141	0.0.312
`langchain` PyPI	before 0.0.171, plus listed versions 0.0.10.0.100.0.1000.0.1010.0.101rc0 Show 45 moreShow less 0.0.1020.0.102rc00.0.1030.0.1040.0.1050.0.1060.0.1070.0.1080.0.1090.0.110.0.1100.0.1110.0.1120.0.1130.0.1140.0.1150.0.1160.0.1170.0.1180.0.1190.0.120.0.1200.0.1210.0.1220.0.1230.0.1240.0.1250.0.1260.0.1270.0.1280.0.1290.0.130.0.1300.0.1310.0.1320.0.1330.0.1340.0.1350.0.1360.0.1370.0.1380.0.1390.0.140.0.1400.0.141	0.0.171

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
PoC in GitHub	tagomaru/CVE-2023-36281	2023-08-31

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-36281 is a critical vulnerability (CVSS 9.8) in Langchain, published August 22, 2023. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 3.44%, the 89th percentile. Fixed in langchain 0.0.312.

References

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This page doesn't list everything

Left out here: 385 versions. The JSON record has them.