Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/mastra-ai/mastra
- https://github.com/mastra-ai/mastra/blob/b7e66f0c478a227985e0062794ef058c3714fab
- https://github.com/mastra-ai/mastra/issues/18911
- https://www.vulncheck.com/advisories/mastra-memory-api-thread-ownership-check-is
- https://github.com/mastra-ai/mastra/issues/18911
FAQ
What is CVE-2026-82273?
CVE-2026-82273 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 attac...
How severe is CVE-2026-82273?
CVE-2026-82273 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-82273?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.