Mastra through 1.63.0 contains an authentication bypass vulnerability in the memory API thread ownership validation when mapUserToResourceId callback is omitted from configuration. Authenticated attackers can enumerate all threads via GET /api/memory/threads and read conversation history and metadata of other resource owners.
History

Fri, 28 Aug 2026 22:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 28 Aug 2026 22:15:00 +0000

Type Values Removed Values Added
First Time appeared Mastra-ai
Mastra-ai mastra
Vendors & Products Mastra-ai
Mastra-ai mastra

Fri, 28 Aug 2026 19:45:00 +0000

Type Values Removed Values Added
Description Mastra through 1.63.0 contains an authentication bypass vulnerability in the memory API thread ownership validation when mapUserToResourceId callback is omitted from configuration. Authenticated attackers can enumerate all threads via GET /api/memory/threads and read conversation history and metadata of other resource owners.
Title Mastra Memory API Thread Ownership Check Is a No-op When mapUserToResourceId Is Unset
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-28T20:25:25.139Z

Reserved: 2026-08-28T11:12:39.515Z

Link: CVE-2026-82273

cve-icon Vulnrichment

Updated: 2026-08-28T20:25:20.730Z

cve-icon NVD

Status : Received

Published: 2026-08-28T20:20:18.227

Modified: 2026-08-28T22:16:56.020

Link: CVE-2026-82273

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-28T22:15:04Z