Vulnerability · Published Aug 19, 2026 · Assigned by VulnCheck

CVE-2026-76237stigmem before 0.9.0a12 Cross-Tenant BOLA via quarantine

High 8.6

In plain English

A high-severity authorization bypass via user-controlled key in stigmem-node from eidetic-labs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)8.6High

Exploit odds (30 days)0.4%top 69.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	stigmem-node	0.9.0a12	GHSA-xhv3-q4xx-349r

Affected products (as reported)

Vendor	Product	Versions
eidetic-labs	stigmem-node	0 – before 0.9.0a12

Weakness: CWE-639 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

References

GitHub Security Advisory (GHSA-xhv3-q4xx-349r) vendor-advisory
VulnCheck Advisory: stigmem before 0.9.0a12 Cross-Tenant BOLA via quarantine third-party-advisory