CVE-2023-36188Public exploitNetwork attack vector

Remote code execution via unsanitized PALChain prompts

Published Jul 6, 2023 · Updated Nov 19, 2024

Code injection in LangChain before 0.0.247 allows remote attackers to execute arbitrary Python code through a prompt passed to PALChain. PALChain sends model-generated code derived from the prompt directly to Python exec without first preventing imports or arbitrary execution commands. Exposure requires an application to pass attacker-controlled prompts to a PALChain instance; successful exploitation runs code with the application's privileges.

CVSS severity9.8
Critical
EPSS probability1.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in LangChain before 0.0.247 allows remote attackers to execute arbitrary Python code through a prompt passed to PALChain. PALChain sends model-generated code derived from the prompt directly to Python exec without first preventing imports or arbitrary execution commands. Exposure requires an application to pass attacker-controlled prompts to a PALChain instance; successful exploitation runs code with the application's privileges.

The record

CVE
CVE-2023-36188
Published
Jul 6, 2023
Updated
Nov 19, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-74, T1059.006
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 19, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1059.006Command and Scripting Interpreter: Python

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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