EUVD-2026-37289
GHSA-w39p-vh2g-g8g5
Severity by source
Sources disagree (Medium–Critical)AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
AC:H because exploitation needs a non-default config (unvalidated IDs plus URL-prefix upstream authz); PR:L since the attacker is typically an authenticated/untrusted end user supplying identifiers; C:H/I:H for cross-scope read and modify/delete, A:N.
vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Lifecycle Timeline
8Blast Radius
ecosystem impact- 160 pypi packages depend on langgraph-sdk (8 direct, 153 indirect)
Ecosystem-wide dependent count for version 0.3.15.
DescriptionNVD
LangGraph Python SDK is used to connect to running LangGraph API servers, manage assistants, threads and stream runs from Python applications. Versions 0.3.14 and prior have unsafe URL path construction through unsanitized caller-supplied identifier values used in HTTP request paths for resource operations. Without sanitization of those values, identifiers that contain characters with special meaning in URL paths could cause the resulting request to address a different resource (and potentially a different resource type) than the SDK method's call site indicates. In deployments where the SDK receives identifier values that originate from untrusted sources, this could result in unintended access, modification, or deletion of resources beyond the calling user's authorization scope. This issue is most consequential in deployments that forward end-user-supplied values directly into SDK identifier parameters without first validating them against an expected format (such as a UUID), and rely on URL-prefix-based authorization at an upstream layer (reverse proxy, edge gateway, WAF), where the authorization decision is made on the SDK call's intended path rather than on the final delivered request path. The issue has been fixed in version 0.3.15.
AnalysisAI
Path manipulation in the LangGraph Python SDK (langgraph-sdk) version 0.3.14 and earlier lets caller-supplied identifier values containing URL-special characters redirect an HTTP request to a different resource — or resource type — than the SDK call intended. When applications forward untrusted, unvalidated identifiers into SDK methods and rely on upstream URL-prefix authorization, an attacker can reach, modify, or delete resources outside their authorization scope. …
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Recommended ActionAI
24 hours: Identify all systems running langgraph-sdk version 0.3.14 or earlier and assess applications that process untrusted identifiers. …
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Same weakness CWE-22 – Path Traversal
View allSame technique Path Traversal
View allVendor StatusVendor
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