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CRITICAL severity

CVE-2023-34540 — langchain

CRITICALFix: langchain-ai/langchain#6992

CVE-2023-34540 is a critical-severity (CVSS 9.8) remote code execution vulnerability in langchain. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for langchain — see the affected versions and patch details below.

Langchain OS Command Injection vulnerability

Also known asGHSA-x32c-59v5-h7fgPYSEC-2023-91
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Nov 9, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.7%probability of exploitation in next 30 days
Lower Risk-0.01%
Lower risk than most CVEs77th percentile — riskier than 77% of all scored CVEsHighest risk
1.17%1.57%1.97%2.37%1.9%1.7%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐍langchain

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

Description

Langchain before v0.0.225 was discovered to contain a remote code execution (RCE) vulnerability in the component JiraAPIWrapper (aka the JIRA API wrapper). This vulnerability allows attackers to execute arbitrary code via crafted input. As noted in the "releases/tag" reference, a fix is available.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPIlangchainall versions0.0.225pip install --upgrade 'langchain==0.0.225'

Affected Products

1 product · 1 configurations
Application
langchainlangchain
1 version
0.0.171
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Langchain before v0.0.225 was discovered to contain a remote code execut…

github.comNVDJun 2023

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for langchain, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update langchain to 0.0.225 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-34540 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

Langchain before v0.0.225 was discovered to contain a remote code execution (RCE) vulnerability in the component JiraAPIWrapper (aka the JIRA API wrapper). This vulnerability allows attackers to execute arbitrary code via crafted input. As noted in the "releases/tag" reference, a fix is available.
O3 Security · Impact-Aware SCA

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CVE-2023-34540: langchain RCE — Fixed in 0.0.225