SEPTEMBER 15, 2026
Live Feed
Back to database
Case File

CVE-2026-55236

MEDIUM · CVSS 5.9 Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-14 · Last synced 2026-09-15

CyberRota Analysis

AI-Generated

The langgraph-api prior to version 0.10.0 is vulnerable due to improper authorization in the run-creation process, allowing low-privileged users to access and reference another user's private assistant through specific API endpoints. This can lead to the disclosure of sensitive metadata, configuration, and context of private assistants, potentially compromising user privacy and security. Organizations using langgraph-api with custom resource handlers should prioritize upgrading to version 0.10.0 to mitigate this risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-55236
Severity
MEDIUM
CVSS
5.9
EPSS
N/A

Original NVD Description

langgraph-api implements the LangGraph API for rapid development and testing. Prior to 0.10.0, the langgraph-api run-creation path authorizes the assistant attached to a run by dispatching assistants.search with an incomplete value instead of the assistants.read event used by direct reads and cron creation. In deployments with custom resource handlers that register only assistants.read, omit an assistants.search handler, and have no global fallback handler, no applicable handler supplies an owner filter, allowing a low-privileged user to reference another user's private assistant through POST /runs or POST /threads/{thread_id}/runs. The run-creation response can disclose the private assistant's metadata, config, and context, and the run can execute using that assistant's configuration. Deployments without custom authorization handlers, or with an equivalent owner filter applied through a global handler or across all assistant events, are not affected. This issue is fixed in version 0.10.0.