{"answers":{"affected":"6 open source packages ship an affected version, including langchain and numexpr. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-39631 exists.","fix":"Upgrade langchain to 0.0.308 or later.","what":"CVE-2023-39631 is a critical code injection vulnerability in n/a, published on 1 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-39631 and fix it if it is affected.\n\nWhat it is: CVE-2023-39631 is a critical code injection vulnerability in n/a, published on 1 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-39631 exists.\n\nAffected packages and fixed versions:\n- langchain (PyPI): affected all versions; fixed in 0.0.308\n- langchain (PyPI): affected all versions; fixed in 0.0.308\n- langchain (PyPI): affected all versions; fixed in 0.0.308\n- numexpr (PyPI): affected all versions; fixed in 2.8.5\n- numexpr (PyPI): affected all versions; fixed in 2.8.5\n- numexpr (PyPI): affected all versions; fixed in 2.8.5\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2023-39631/ (Markdown: https://insights.sbomify.com/CVE-2023-39631/index.md)","id":"CVE-2023-39631","markdown":"https://insights.sbomify.com/CVE-2023-39631/index.md","name":"CVE-2023-39631","record":{"aliases":["GHSA-f73w-4m7g-ch9x","PYSEC-2023-162","PYSEC-2023-163","ROOT-APP-PYPI-CVE-2023-39631"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Python AI library","requires_auth":"none","summary":"Remote attackers can execute arbitrary code via the evaluate function in the numexpr library used by LangChain.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"langchain","vendor":"langchain"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-94","name":"Improper Control of Generation of Code"}],"description":"An issue in LanChain-ai Langchain v.0.0.245 allows a remote attacker to execute arbitrary code via the evaluate function in the numexpr library.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Langchain vulnerable to arbitrary code execution via the evaluate function in the numexpr library","id":"CVE-2023-39631","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"code_injection","year":"2023"},"n_packages":6,"n_references":2,"next":{"headline":"Command injection in n/a","id":"CVE-2023-39637"},"packages":[{"ecosystem":"PyPI","fixed":["0.0.308"],"introduced":["0"],"last_affected":[],"package":"langchain","purl":null,"source":"GHSA-f73w-4m7g-ch9x"},{"ecosystem":"PyPI","fixed":["0.0.308"],"introduced":["0"],"last_affected":[],"package":"langchain","purl":"pkg:pypi/langchain","source":"GHSA-f73w-4m7g-ch9x"},{"ecosystem":"PyPI","fixed":["0.0.308"],"introduced":["0"],"last_affected":[],"package":"langchain","purl":"pkg:pypi/langchain","source":"PYSEC-2023-162"},{"ecosystem":"PyPI","fixed":["2.8.5"],"introduced":["0"],"last_affected":[],"package":"numexpr","purl":null,"source":"GHSA-f73w-4m7g-ch9x"},{"ecosystem":"PyPI","fixed":["2.8.5"],"introduced":["0"],"last_affected":[],"package":"numexpr","purl":"pkg:pypi/numexpr","source":"GHSA-f73w-4m7g-ch9x"},{"ecosystem":"PyPI","fixed":["2.8.5"],"introduced":["0"],"last_affected":[],"package":"numexpr","purl":"pkg:pypi/numexpr","source":"PYSEC-2023-163"}],"prev":{"headline":"Information disclosure in n/a","id":"CVE-2023-39620"},"products":["n/a"],"published":"2023-09-01","related":[{"cvss_score":9.8,"headline":"langchain vulnerable to arbitrary code execution","id":"CVE-2023-36281","kev_date_added":null,"published":"2023-08-22"},{"cvss_score":9.8,"headline":"LangChain vulnerable to arbitrary code execution","id":"CVE-2023-38860","kev_date_added":null,"published":"2023-08-15"},{"cvss_score":9.8,"headline":"LangChain vulnerable to arbitrary code execution","id":"CVE-2023-38896","kev_date_added":null,"published":"2023-08-15"},{"cvss_score":9.8,"headline":"LangChain vulnerable to arbitrary code execution","id":"CVE-2023-39659","kev_date_added":null,"published":"2023-08-15"},{"cvss_score":9.8,"headline":"langchain Code Injection vulnerability","id":"CVE-2023-36095","kev_date_added":null,"published":"2023-08-05"},{"cvss_score":9.8,"headline":"langchain vulnerable to arbitrary code execution","id":"CVE-2023-36188","kev_date_added":null,"published":"2023-07-06"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2024-10-01","vendors":["n/a"]},"summary":"Remote attackers can execute arbitrary code via the evaluate function in the numexpr library used by LangChain.","url":"https://insights.sbomify.com/CVE-2023-39631/"}