{"answers":{"affected":"3 open source packages ship an affected version, including langchain-chatchat.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7847 exists.","fix":"No fix has been published for CVE-2026-7847 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-7847 is a low-severity vulnerability in chatchat-space Langchain-Chatchat, published on 5 May 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-7847 and fix it if it is affected.\n\nWhat it is: CVE-2026-7847 is a low-severity vulnerability in chatchat-space Langchain-Chatchat, published on 5 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7847 exists.\n\nAffected packages and fixed versions:\n- langchain-chatchat (PyPI): affected all versions up to 0.3.1.3; no fix listed\n- langchain-chatchat (PyPI): affected all versions up to 0.3.1.3; no fix listed\n- langchain-chatchat (PyPI): affected all versions up to 0.3.1.3; no fix listed\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-2026-7847/ (Markdown: https://insights.sbomify.com/CVE-2026-7847/index.md)","id":"CVE-2026-7847","markdown":"https://insights.sbomify.com/CVE-2026-7847/index.md","name":"CVE-2026-7847","record":{"aliases":["GHSA-jv4p-mhmp-69vw","PYSEC-2026-2557"],"analysis":{"component_type":"web_application","fix_type":"no_fix_stated","impacts":["security_bypass"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Langchain-Chatchat","requires_auth":"low_privilege","summary":"Attackers can predict file IDs due to insufficient randomness in Langchain-Chatchat, potentially bypassing access controls.","user_interaction":"not_required","vuln_class":"weak_cryptography"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[],"cvss":{"score":2.1,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P","version":"4.0"},"cwes":[{"id":"CWE-330","name":"Use of Insufficiently Random Values"},{"id":"CWE-310","name":null}],"description":"A vulnerability was found in chatchat-space Langchain-Chatchat up to 0.3.1.3. The affected element is the function _get_file_id of the file libs/chatchat-server/chatchat/server/api_server/openai_routes.py of the component Uploaded File Handler. Performing a manipulation results in insufficiently random values. Access to the local network is required for this attack. The attack's complexity is rated as high. The exploitability is described as difficult. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"chatchat-space Langchain-Chatchat Uploaded File openai_routes.py _get_file_id random values","id":"CVE-2026-7847","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"weak_cryptography","year":"2026"},"n_packages":3,"n_references":6,"next":{"headline":"SQL Injection in Alior Bank raty PrestaShop module","id":"CVE-2026-7848"},"packages":[{"ecosystem":"PyPI","fixed":[],"introduced":["0"],"last_affected":["0.3.1.3"],"package":"langchain-chatchat","purl":null,"source":"GHSA-jv4p-mhmp-69vw"},{"ecosystem":"PyPI","fixed":[],"introduced":["0"],"last_affected":["0.3.1.3"],"package":"langchain-chatchat","purl":"pkg:pypi/langchain-chatchat","source":"GHSA-jv4p-mhmp-69vw"},{"ecosystem":"PyPI","fixed":[],"introduced":["0"],"last_affected":["0.3.1.3"],"package":"langchain-chatchat","purl":"pkg:pypi/langchain-chatchat","source":"PYSEC-2026-2557"}],"prev":{"headline":"chatchat-space Langchain-Chatchat OpenAI-Compatible File Upload API openai_routes.py files toctou","id":"CVE-2026-7846"},"products":["Langchain-Chatchat"],"published":"2026-05-05","related":[],"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":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-06","vendors":["chatchat-space"]},"summary":"Attackers can predict file IDs due to insufficient randomness in Langchain-Chatchat, potentially bypassing access controls.","url":"https://insights.sbomify.com/CVE-2026-7847/"}