{"id":"CVE-2026-104873","title":"LangGraph Python SDK is used to connect to running LangGraph API servers, manage assistants, threads and stream runs from Python applications","summary":"LangGraph Python SDK is used to connect to running LangGraph API servers, manage assistants, threads and stream runs from Python applications. From 0.1.45 until 0.4.4, the langgraph-sdk resource-scoped authorization decorators @auth.on.t…","severity":"high","cvss":7.6,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","cwe":["CWE-863","CWE-430"],"vendor":"langchain-ai","product":"langgraph","affected":["langgraph >= 0.1.45, < 0.4.4"],"patched":["langgraph-sdk 0.4.4"],"published":"2026-10-02","updated":"2026-10-06","sourceUpdated":"2026-10-06T15:08:38.397","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-104873","references":[{"url":"https://github.com/langchain-ai/langgraph/commit/5a77be5e8bec1600ad0a865638d88c1368497559","label":"security-advisories@github.com"},{"url":"https://github.com/langchain-ai/langgraph/releases/tag/sdk==0.4.4","label":"security-advisories@github.com"},{"url":"https://github.com/langchain-ai/langgraph/security/advisories/GHSA-fvww-7h3r-vfhp","label":"security-advisories@github.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-104873.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-104873"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2545335"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-104873"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-104873"},{"url":"https://github.com/advisories/GHSA-fvww-7h3r-vfhp"},{"url":"https://github.com/langchain-ai/langgraph"},{"url":"https://pypi.org/project/langgraph-sdk"},{"url":"https://access.redhat.com/errata/RHSA-2026:84734"}],"tags":["nvd","cve.org","csaf","vex","red-hat","ghsa","pip","osv"],"epss":0.00253,"epssPercentile":0.16678,"aliases":["GHSA-fvww-7h3r-vfhp","PYSEC-2026-4240"],"ecosystem":"pip","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-05T14:46:58.849413Z"},"cvssSource":"cna","scores":{"cna":7.6,"vendor":8.1},"ingestedAt":"2026-10-02T22:33:09.843Z","slug":"CVE-2026-104873","body":"## Overview\n\nLangGraph Python SDK is used to connect to running LangGraph API servers, manage assistants, threads and stream runs from Python applications. From 0.1.45 until 0.4.4, the langgraph-sdk resource-scoped authorization decorators @auth.on.threads, @auth.on.assistants, and @auth.on.crons ignore the actions argument and register the selected handler for every action on the resource. Because that wildcard resource handler is selected before broader fallback handlers, an authenticated user may bypass fallback action, ownership, or permission checks and read, update, or delete another user's resource. Only Python deployments using actions on the affected decorators are vulnerable, and a deployment remains protected when the selected handler independently enforces all required checks for every action it receives. This issue is fixed in version 0.4.4.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-104873)\n\nAffected packages:\n\n- `langgraph-sdk >= 0.1.45, <= 0.4.3`\n\nPatched in:\n\n- `langgraph-sdk 0.4.4`\n\nSource: https://github.com/advisories/GHSA-fvww-7h3r-vfhp\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Ansible Automation Orchestrator 2026, Exploit Intelligence, Migration Toolkit for Applications 8, OpenShift Lightspeed, Red Hat Enterprise Linux AI (RHEL AI) 3 · no fix planned: Red Hat Enterprise Linux AI (RHEL AI) 3, Ansible Automation Orchestrator 2026, Exploit Intelligence, Migration Toolkit for Applications 8, … · updated 2026-10-19 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-104873.json)\n- **RHSA-2026:84734** · Red Hat · fixed in: Red Hat OpenShift AI 3.4 · released 2026-10-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:84734)","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":41.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}