CVE-2026-76237

High

Description

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.

SeverityHigh
CVSS8.6
Exploit probability—
ProductStigmem-node
PublishedAug 19, 2026
First seenAug 19, 2026

How to fix

Update
  • stigmem-node0.9.0a12 or later

Affected products

ProductAffected versionsFixed in
stigmem-nodePyPIv < 0.9.0a120.9.0a12

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