High · CVSS 8.6CVE-2026-76237GHSA-XHV3-Q4XX-349R

stigmem before 0.9.0a12 Cross-Tenant BOLA via quarantine

Answer in brief

CVE-2026-76237 records a High severity (CVSS 8.6) vulnerability in stigmem before 0.9.0a12 Cross-Tenant BOLA via quarantine. The current sources do not mark it as known exploited. The current feed maps eidetic-labs/stigmem (generic), eidetic-labs/stigmem-node (generic), stigmem-node (pip), stigmem-node (pypi). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 19, 2026Updated Sep 24, 2026Source checked Oct 3, 2026First seen by HOL Jun 19, 2026Material review Sep 24, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.6
Exploitation: Not marked as known exploited
Affected software: 4 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 8.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps eidetic-labs/stigmem (generic), eidetic-labs/stigmem-node (generic), stigmem-node (pip), stigmem-node (pypi). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
eidetic-labs/stigmemgeneric	>=0 <0.9.0a12	0.9.0a12
eidetic-labs/stigmem-nodegeneric	>=0 <0.9.0a12	0.9.0a12
stigmem-nodepip	<0.9.0a12	0.9.0a12
stigmem-nodepypi	>=0 <0.9.0a12	0.9.0a12

Recommended response

Check inventory. Check lockfiles and deployed manifests for eidetic-labs/stigmem, eidetic-labs/stigmem-node, stigmem-node.
Review the reported fix. Update eidetic-labs/stigmem to 0.9.0a12; eidetic-labs/stigmem-node to 0.9.0a12; stigmem-node to 0.9.0a12; stigmem-node to 0.9.0a12 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Jun 19, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.