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TI-2026-63192 Aliases CVE-2026-93852GHSA-rf22-mxh9-4qvf

Missing authorization in OpenStack Blazar

Priority LOW 31CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

In OpenStack Blazar before 17.0.1, the V2 lease listing operation (GET /v2/leases) returns leases for every project without enforcing project scoping or an administrator-only policy. Any authenticated user with access to the Blazar REST API can enumerate leases belonging to other tenants, exposing lease IDs, reservation IDs, resource IDs, and reservation metadata. The exposed lease IDs also enable the object-level authorization bypass tracked in the companion request, allowing an attacker to then modify or delete the enumerated leases.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00372 31st percentileScored 2026-11-07
Fix Fixed Blazar (OpenStack): 15.1.1, 16.0.1, 17.0.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OpenStackBlazar1.0.0 to before 15.1.1; 16.0.0 to before 16.0.1; 17.0.0 to before 17.0.115.1.1, 16.0.1, 17.0.1Patch availableCNA
  • Blazar VendorOpenStack Affected 1.0.0 to before 15.1.1; 16.0.0 to before 16.0.1; 17.0.0 to before 17.0.1 Fixed in 15.1.1, 16.0.1, 17.0.1 Patch available CNA

Remediation

  • Fix · CNA Blazar (OpenStack) Fixed in 15.1.1, 16.0.1, 17.0.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    OpenStack Blazar 15.1.1, 16.0.1, 17.0.1

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-63194 In OpenStack Blazar before 17.0.1, the V2 lease API does not enforce object-level…Priority LOW 32
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-93852
  2. 2026-10-03 Alias added: GHSA-rf22-mxh9-4qvf

References

Other 1

  • TI-2026-78562 Incorrect authorization in OpenStack Manila share operations CVSS 3.1CRITICAL 9.9
  • TI-2026-63467 Code injection in OpenStack Octavia CVSS 4.0CRITICAL 9.4
  • TI-2017-13226 The tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c in the Linux kernel before… CVSS 3.1CRITICAL 9.8
  • TI-2026-69629 OpenStack Mistral flaw lets users change other projects' resources CVSS 4.0HIGH 7.2
  • TI-2026-69623 Command injection in OpenStack Mistral std.ssh_proxied action CVSS 4.0HIGH 8.7
  • TI-2022-17779 Improper privilege management in OpenStack CVSS 3.1HIGH 8.8
See all 332 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences