CVE-2026-33551

Summary

An issue was discovered in OpenStack Keystone 14 through 26 before 26.1.1, 27.0.0, 28.0.0, and 29.0.0. Restricted application credentials can create EC2 credentials. By using a restricted application credential to call the EC2 credential creation API, an authenticated user with only a reader role may obtain an EC2/S3 credential that carries the full set of the parent user's S3 permissions, effectively bypassing the role restrictions imposed on the application credential. Only deployments that use restricted application credentials in combination with the EC2/S3 compatibility API (swift3 / s3api) are affected.

Affected Software

VendorProductVersion RangeStatus
OpenStackKeystone14.0.0 < 26.1.1affected
OpenStackKeystone27.0.0affected
OpenStackKeystone28.0.0affected
OpenStackKeystone29.0.0affected

Weaknesses

  • CWE-863: CWE-863 Incorrect Authorization

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: no
    • Technical Impact: partial

Additional References

References