CVE-2023-39631: LangChain arbitrary code execution via numexpr
LangChain, numexpr
An issue in LangChain allowed remote code execution via the evaluate function in the optional numexpr dependency. Patches were released to fix the vulnerability.
disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why
- CVSS
- 9.8
- EPSS
- 0.02 · top 24% · 2026-11-13
- fix status
- Fix status unknown
- first report
- 1 Sep 2023
- last update
- 1 Sep 2023
- CVE ids
Timeline · 2
Sources · 2
Advisories and databases
- 2023-09-01CVE-2023-39631: Langchain vulnerable to arbitrary code execution via the evaluate function in the numexpr libraryGitHub Advisory Database · github.com/advisories/GHSA-f73w-4m7g-ch9x
- 2023-09-01CVE-2023-39631: An issue in LanChain-ai Langchain v.0.0.245 allows a remote attacker to execute arbitrary code via the evaluate function in the…NVD · nvd.nist.gov/vuln/detail/CVE-2023-39631
Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.
Classification
- lane
- Patch now
- AI role
- Attack on AI
- categories
- Infrastructure vulnerability
- severity
- 2 · Disclosed vulnerability
- fix status
- Fix status unknown
- targets
- Framework / tooling
- owasp llm top 10
- LLM03:2025 Supply Chain
- mitre atlas
- no technique for these categories
- dates
- happened 1 Sep 2023 · first reported 1 Sep 2023
- origin
- GitHub Advisory DatabaseVulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
- record
- confidence 0.95 · created 2026-10-18 07:00Z · updated 2026-10-18 10:04Z
Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned
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the brief as text
# CVE-2023-39631: LangChain arbitrary code execution via numexpr https://gcdradar.vercel.app/incidents/cve-2023-39631-langchain-arbitrary-code-execution-via-numexp · AIR-2023-0062 · closed 2023-09-01 - Lane: Patch now - Severity: 2 (Disclosed vulnerability) - Fix status: Fix status unknown - First reported: 2023-09-01 - AI role: Attack on AI - Products: LangChain, numexpr - CVE ids: CVE-2023-39631 - CVSS: 9.8 ## Summary An issue in LangChain allowed remote code execution via the evaluate function in the optional numexpr dependency. Patches were released to fix the vulnerability. ## What to do No action recorded; read the sources below and the vendor's advisory. ## Latest updates - 2023-09-01: CVE-2023-39631: An issue in LanChain-ai Langchain v.0.0.245 allows a remote attacker to execute arbitrary code via the evaluate function in the… (https://nvd.nist.gov/vuln/detail/CVE-2023-39631) - 2023-09-01: CVE-2023-39631: Langchain vulnerable to arbitrary code execution via the evaluate function in the numexpr library (https://github.com/advisories/GHSA-f73w-4m7g-ch9x) ## Sources - 2023-09-01 GitHub Advisory Database: CVE-2023-39631: Langchain vulnerable to arbitrary code execution via the evaluate function in the numexpr library https://github.com/advisories/GHSA-f73w-4m7g-ch9x - 2023-09-01 NVD: CVE-2023-39631: An issue in LanChain-ai Langchain v.0.0.245 allows a remote attacker to execute arbitrary code via the evaluate function in the… https://nvd.nist.gov/vuln/detail/CVE-2023-39631 Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.
Related
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Patch now · Disclosed · since 15 Aug 2023 · CVE-2023-38860
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Patch now · Disclosed · since 26 Feb 2024 · CVE-2024-0243
AI - closed7.5LangChain family CVE-2023-32786: Prompt injection and SSRF vulnerability in Langchain
Patch now · Disclosed · since 20 Oct 2023 · CVE-2023-32786
AI - closed8.8LangChain family CVE-2023-46229: LangChain Server Side Request Forgery vulnerability
Patch now · Disclosed · since 19 Oct 2023 · CVE-2023-46229
AI - closed4.9LangChain family CVE-2024-8309: LangChain GraphCypherQAChain SQL injection vulnerability
Patch now · Disclosed · since 29 Oct 2024 · CVE-2024-8309
AI - closed8.4LangChain family CVE-2024-5998: LangChain pickle deserialization of untrusted data
Patch now · Disclosed · since 17 Sep 2024 · CVE-2024-5998
AI