CVE-2026-76237: Eidetic-Labs Stigmem-Node

High severity, CVSS 8.6. EPSS: 0.4% chance of exploitation in the next 30 days.

stigmem-node before 0.9.0a12 contains a broken object level authorization (cross-tenant BOLA) vulnerability in the quarantine review endpoints. On multi-tenant deployments running the opt-in stigmem-plugin-multi-tenant, the list/count queries and _get_quarantined_fact in routes/quarantine.py lacked a tenant_id predicate and the garden lookup was not tenant-scoped, allowing a tenant administrator with only a plain tenant write capability to list, read, and admit or reject quarantined facts belonging to other tenants via the /v1/quarantine endpoints. Default single-tenant deployments are not affected.

Affected products

• Eidetic-Labs Stigmem-Node: before 0.9.0a12 (fixed in 0.9.0a12)

Published 2026-08-19. Last modified 2026-09-24.