CVE-2023-34541Public exploitNetwork attack vector

Arbitrary code execution via executable Python prompt files

Published Jun 20, 2023 · Updated Dec 9, 2024

Arbitrary code execution in LangChain before 0.0.247 allows context-dependent attackers to run Python code through a crafted prompt file. The load_prompt path uses Python import machinery to execute a supplied .py file while retrieving its PROMPT object, so top-level statements run unchecked. An application or user must direct load_prompt to the crafted local file or URL; execution inherits the LangChain process privileges.

CVSS severity9.3
Critical
EPSS probability0.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary code execution in LangChain before 0.0.247 allows context-dependent attackers to run Python code through a crafted prompt file. The load_prompt path uses Python import machinery to execute a supplied .py file while retrieving its PROMPT object, so top-level statements run unchecked. An application or user must direct load_prompt to the crafted local file or URL; execution inherits the LangChain process privileges.

The record

CVE
CVE-2023-34541
Published
Jun 20, 2023
Updated
Dec 9, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 9, 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

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8CISA-ADPCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1203Exploitation for Client Execution

Public exploit references

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Technologies

Your stack

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Your stack

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