Auth bypass in Absmach Magistrala
CVE-2026-111684
Magistrala through 1.0.0 contains an authorization bypass vulnerability that allows authenticated workspace members to view, issue, and revoke other tenants' device certificates by supplying foreign serials or entity ids. Attackers can call RevokeBySerial, RevokeAll, ViewCert, ListCerts, or IssueCert under their own workspace path to disconnect other tenants' devices, disclose certificates, and mint CA-signed certificates for their device ids.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@hieuPenguinnn/magistrala-certs-missing-workspace-scope-cross-tenant (third-party-advisory)
- github.com/absmach/magistrala/blob/v1.0.0/certs/service.go (technical-description)
- github.com/absmach/magistrala/blob/v1.0.0/certs/middleware/authorization.go (technical-description)
- github.com/absmach/magistrala (product)
- www.vulncheck.com/advisories/magistrala-through-1.0.0-cross-tenant-authorizatio… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111684?
- CVE-2026-111684 is a high-severity vulnerability in Absmach Magistrala, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.3/10. Published 2026-10-16.
- How severe is CVE-2026-111684?
- High severity. CVSS v3 base score is 8.3 out of 10.