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PatchSiren cyber security CVE debrief

CVE-2026-111684 absmach CVE debrief

CVE-2026-111684 debrief: Magistrala through 1.0.0 Cross-Tenant Authorization Bypass in Certs Service. This high-severity vulnerability allows authenticated workspace members to bypass authorization and manage other tenants' device certificates. Defenders should assess exposure and prioritize remediation to prevent potential unauthorized access to certificate management functions. The vulnerability impacts Magistrala deployments, particularly those using version 1.0.0, and could lead to unauthorized access, disruption of device connectivity, and certificate misuse.

Vendor
absmach
Product
magistrala
CVSS
HIGH 7.2
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-16
Original CVE updated
2026-10-21
Advisory published
2026-10-16
Advisory updated
2026-10-21

Who should care

Defenders responsible for Magistrala deployments, particularly those using version 1.0.0, should assess exposure and prioritize remediation to prevent potential unauthorized access to certificate management functions.

Why it matters

CVE-2026-111684 is a high-severity vulnerability in Magistrala's Certs Service, allowing authenticated workspace members to bypass authorization and manage other tenants' device certificates. Defenders should prioritize verifying and remediating Magistrala 1.0.0 deployments to prevent potential unauthorized access and disruption of device connectivity.

  • Potential unauthorized access to sensitive certificate management functions.
  • Possible disruption of device connectivity and communication.
  • Risk of certificate disclosure and misuse.
  • Need for verification of affected versions and remediation efforts.

Technical summary

The Magistrala Certs Service is vulnerable to an authorization bypass, allowing authenticated workspace members to view, issue, and revoke other tenants' device certificates by supplying foreign serials or entity IDs. This vulnerability impacts Magistrala deployments, particularly those using version 1.0.0, and could lead to unauthorized access, disruption of device connectivity, and certificate misuse. Defenders should prioritize verifying and remediating Magistrala 1.0.0 deployments, focusing on restricting access to certificate management functions and ensuring proper workspace scope enforcement.

Defensive priority

Defenders should prioritize verifying and remediating Magistrala 1.0.0 deployments, focusing on restricting access to certificate management functions and ensuring proper workspace scope enforcement.

Recommended defensive actions

  • Verify Magistrala deployments for version 1.0.0 and restrict access to certificate management functions.
  • Enforce proper workspace scope for authenticated workspace members.
  • Monitor for suspicious activity related to certificate management and device connectivity.
  • Consider implementing compensating controls to limit potential damage.
  • Review and update access controls for certificate management functions.
  • Conduct a thorough review of device connectivity and communication.
  • Implement additional monitoring and logging to detect potential security incidents.

Evidence notes

The CVE record and source item provide details on the authorization bypass vulnerability in Magistrala's Certs Service, allowing authenticated workspace members to view, issue, and revoke other tenants' device certificates.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-111684 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-111684

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-111684 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-111684

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Magistrala through 1.0.0 Cross-Tenant Authorization Bypass in Certs Service

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/111xxx/CVE-2026-111684.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://hackmd.io/@hieuPenguinnn/magistrala-certs-missing-workspace-scope-cross-tenant

    Supplemental source - third-party-advisory

  • Source reference

    Unverified legacy reference

    URL: https://github.com/absmach/magistrala/blob/v1.0.0/certs/service.go

    Supplemental source - technical-description

  • Source reference

    Unverified legacy reference

    URL: https://github.com/absmach/magistrala/blob/v1.0.0/certs/middleware/authorization.go

    Supplemental source - technical-description

  • Source reference

    Unverified legacy reference

    URL: https://github.com/absmach/magistrala

    Supplemental source - product

  • Source reference

    Unverified legacy reference

    URL: https://www.vulncheck.com/advisories/magistrala-through-1.0.0-cross-tenant-authorization-bypass-in-certs-service

    Supplemental source - third-party-advisory

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.