CVE-2026-76236

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-76236
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-76236.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-76236
Aliases
Published
2026-08-19T14:02:15Z
Modified
2026-08-23T03:42:38Z
Severity
  • 7.2 (High) CVSS_V4 - 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 CVSS Calculator
Summary
stigmem before 0.9.0a12 Cross-Tenant BOLA via Tombstones
Details

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.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-639"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/76xxx/CVE-2026-76236.json"
}
References

Affected packages

Git / github.com/eidetic-labs/stigmem

Affected ranges

Type
GIT
Repo
https://github.com/eidetic-labs/stigmem
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
935751421d481fa05bf3d56adba590c2de95378c
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.9.0a12"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ]
}

Affected versions

v0.*
v0.9.0a10
v0.9.0a11
v0.9.0a2
v0.9.0a3
v0.9.0a4
v0.9.0a5
v0.9.0a6
v0.9.0a7
v0.9.0a8
v0.9.0a9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-76236.json"