Strawberry GraphQL is a library for creating GraphQL APIs. From 0.217.0 until 0.326.1, PermissionExtension.resolve() on a synchronous field resolver evaluates the result of has_permission() for truthiness. When a custom permission declares has_permission() as a normal function but returns an awaitable, supports_sync does not classify it as asynchronous, the awaitable is not awaited, and its inherently truthy object value permits the protected resolver to run even when the result would resolve to false. This affects synchronous field resolvers under both execute_sync() and execute(); permissions declared with async def has_permission() and synchronous permissions returning a boolean are not affected. This issue is fixed in version 0.326.1.
History

Wed, 14 Oct 2026 02:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sun, 11 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
First Time appeared Strawberry
Strawberry strawberry
Vendors & Products Strawberry
Strawberry strawberry

Fri, 09 Oct 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-253
References
Metrics threat_severity

None

threat_severity

Important


Thu, 08 Oct 2026 22:30:00 +0000

Type Values Removed Values Added
Description Strawberry GraphQL is a library for creating GraphQL APIs. From 0.217.0 until 0.326.1, PermissionExtension.resolve() on a synchronous field resolver evaluates the result of has_permission() for truthiness. When a custom permission declares has_permission() as a normal function but returns an awaitable, supports_sync does not classify it as asynchronous, the awaitable is not awaited, and its inherently truthy object value permits the protected resolver to run even when the result would resolve to false. This affects synchronous field resolvers under both execute_sync() and execute(); permissions declared with async def has_permission() and synchronous permissions returning a boolean are not affected. This issue is fixed in version 0.326.1.
Title Strawberry GraphQL: Synchronous permission checks can treat an awaitable authorization result as truthy
Weaknesses CWE-863
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-10-08T22:13:00.911Z

Updated: 2026-10-14T01:31:32.335Z

Reserved: 2026-10-08T17:21:52.976Z

Link: CVE-2026-107728

cve-icon Vulnrichment

Updated: 2026-10-14T01:31:24.743Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-08T23:16:58.180

Modified: 2026-10-14T02:16:57.993

Link: CVE-2026-107728

cve-icon Redhat

Severity : Important

Publid Date: 2026-10-08T22:13:00Z

Links: CVE-2026-107728 - Bugzilla