CVE-2026-93861 (GCVE-0-2026-93861)

Vulnerability from cvelistv5 – Published: 2026-10-08 17:38 – Updated: 2026-10-15 18:10
VLAI
Summary
In OpenStack Mistral through 23.0.0, the workflow membership API lets a project that has accepted a share of another project's private workflow create a further membership naming a third project. The new membership row is created with its project_id defaulted to the accepting project rather than the original workflow owner, and thus the owner can neither see nor delete it. The third project can accept this membership (that it had not actually been granted by the owner), and then read and execute the owner's private workflow; only the accepting (not the owning) project can later revoke that access.
Severity
6 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 16:16 UTC
CWE
  • CWE-863 - Incorrect Authorization
Assigner
mitre CNA under the mitre root
CNA scorecard E 29/100 over 2230 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
OpenStack Mistral Affected: 0 , < 20.1.1 (semver)
Affected: 21.0.0 , < 21.0.1 (semver)
Affected: 22.0.0 , < 22.0.1 (semver)
Affected: 23.0.0 (semver)
guessed Create a notification for this product.
Show details on NVD website
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