CVE-2026-82273: high-severity vulnerability in mastra-ai mastra
Mastra Memory API Thread Ownership Check Is a No-op When mapUserToResourceId Is Unset
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.5%
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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Affected products
mastra-ai · mastraRelated CVEs — mastra-ai mastra
In the same product, most dangerous first.
References
https://github.com/mastra-ai/mastrahttps://github.com/mastra-ai/mastra/blob/b7e66f0c478a227985e0062794ef058c3714fabf/packages/server/src/server/handlers/utils.tshttps://github.com/mastra-ai/mastra/issues/18911https://www.vulncheck.com/advisories/mastra-memory-api-thread-ownership-check-is-a-no-op-when-mapusertoresourceid-is-unset