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langchain_experimental vulnerable to arbitrary code execution via PALChain in the python exec method

Critical severity GitHub Reviewed Published Oct 9, 2023 to the GitHub Advisory Database • Updated Feb 24, 2025

Package

pip langchain-experimental (pip)

Affected versions

<= 0.0.14

Patched versions

None

Description

langchain_experimental (aka LangChain Experimental) in LangChain before 0.0.306 allows an attacker to bypass the CVE-2023-36258 fix and execute arbitrary code via import in Python code, which is not prohibited by pal_chain/base.py.

References

Published by the National Vulnerability Database Oct 9, 2023
Published to the GitHub Advisory Database Oct 9, 2023
Reviewed Oct 10, 2023
Last updated Feb 24, 2025

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(54th percentile)

Weaknesses

No CWEs

CVE ID

CVE-2023-44467

GHSA ID

GHSA-gjjr-63x4-v8cq

Source code

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