CVE-2026-104873
CVE-2026-104873 · LangGraph SDK custom auth silently ignores actions= on resource decorators
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.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.
CVSS 7.6 · High · EPSS 0.3% · Fix available
- Published
- Updated
Stack: python
Affected products and versions
langgraph
- Versions
- >= 0.1.45, < 0.4.4: Affected
No fix published
langgraph-sdk PyPI
- Versions
- 0.1.45
- 0.1.46
- 0.1.47
- 0.1.48
- 0.1.50
- 0.1.51
- 0.1.53
- 0.1.55
- 0.1.56
- 0.1.57
- 0.1.58
- 0.1.59
- 0.1.60
- 0.1.61
- 0.1.62
- 0.1.63
- 0.1.64
- 0.1.65
- 0.1.66
- 0.1.69
- 0.1.70
- 0.1.71
- 0.1.72
- 0.1.73
- 0.1.74
- 0.2.0
- 0.2.0a1
- 0.2.1
- 0.2.10
- 0.2.12
- 0.2.14
- 0.2.15
- 0.2.2
- 0.2.3
- 0.2.4
- 0.2.5
- 0.2.6
- 0.2.7
- 0.2.8
- 0.2.9
- 0.3.0
- 0.3.1
- 0.3.10
- 0.3.11
- 0.3.12
- 0.3.13
- 0.3.14
- 0.3.15
- 0.3.2
- 0.3.3
- 0.3.4
- 0.3.5
- 0.3.6
- 0.3.7
- 0.3.8
- 0.3.9
- 0.4.0
- 0.4.1
- 0.4.2
- 0.4.3
- Affected ranges
- ECOSYSTEM: ≥ 0.1.45, < 0.4.4
Update to 0.4.4