Vulnerability · Published Oct 16, 2026 · Assigned by VulnCheck

CVE-2026-111684Magistrala through 1.0.0 Cross-Tenant Authorization Bypass in Certs Service

High 8.3

In plain English

A high-severity authorization bypass via user-controlled key in magistrala from absmach. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities).

Severity (CVSS 3.1)8.3High

Exploit odds (30 days)0.2%top 87.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
absmach	magistrala	0 – through 1.0.0

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H

References

https://hackmd.io/@hieuPenguinnn/magistrala-certs-missing-workspace-scope-cross-tenant third-party-advisory
https://github.com/absmach/magistrala/blob/v1.0.0/certs/service.go#L136-L180 technical-description
https://github.com/absmach/magistrala/blob/v1.0.0/certs/middleware/authorization.go#L97-L110 technical-description
https://github.com/absmach/magistrala product
VulnCheck Advisory: Magistrala through 1.0.0 Cross-Tenant Authorization Bypass in Certs Service third-party-advisory