CVE Catalog

CVE-2026-82273

MediumCVSS 6.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.30%

23th percentile - higher than 23% of all known CVEs

Summary

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.

Risk Assessment

An attacker could access private conversations and metadata of other users, potentially leading to privacy breach and data leakage.

Recommendation

Update Mastra to a version that fixes ownership validation. Ensure the mapUserToResourceId callback is always configured.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS