High
Mastra Memory API Thread Ownership Check Is a No-op When mapUserToResourceId Is Unset
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.
Announced Source revision 1
Original source ↗CVE-2026-82273
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-82273
mastra
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "mastra-ai",
"product": "mastra",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "semver",
"lessThanOrEqual": "1.63.0"
}
],
"packageName": "@mastra/server",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-82273
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #1516 · Revision 1
- Added to Heist Feed
- Publisher date