High 7.2Published Aug 19, 2026

CVE-2026-76236stigmem before 0.9.0a12 Cross-Tenant BOLA via Tombstones

Updated under an hour ago (2026-10-19 06:50 UTC)

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Every CVE for eidetic-labs stigmem-node

Exploited in the last 30 days

stigmem-node before 0.9.0a12 contains a cross-tenant broken object level authorization (BOLA) flaw in the RTBF (right-to-be-forgotten) tombstone mechanism. issue_tombstone defaulted the tenant to "default" instead of the caller's tenant, allowing deletion records to be written to the wrong tenant, and the read-suppression path (_get_tombstone_filter and the tombstone scope cache) lacked a tenant_id predicate, so tombstone suppression was applied tenant-blind across fact queries and provenance reads. As a result, a tenant's deletion could be attributed to the wrong tenant and tombstone suppression could either hide facts belonging to other tenants or fail to hide facts within the correct tenant, undermining data isolation and RTBF guarantees. The issue is exploitable only on multi-tenant deployments running the opt-in stigmem-plugin-multi-tenant; single-tenant deployments are unaffected. Fixed in 0.9.0a12.

CVSS: 7.2 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N
Weakness (CWE): CWE-639
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Aug 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

eidetic-labs stigmem-node eidetic_labs:stigmem_node (from the name)	before 0.9.0a12; 0.9.0a12 not affected	CNA record

References

https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-x26h-xmv8-gxf7vendor-advisory
https://www.vulncheck.com/advisories/stigmem-before-0a12-cross-tenant-bola-via-tombstonesthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.