CVE-2026-59335 (GCVE-0-2026-59335)

Vulnerability from cvelistv5 – Published: 2026-08-25 11:05 – Updated: 2026-08-25 13:09
VLAI
Title
Case-Sensitive Authorization Check Bypass via Identity Zone ID Case Manipulation Leads to Full UAA Compromise
Summary
Improper handling of case sensitivity (CWE-178) in the identity zone authorization check in the Identity Zone Endpoint in Cloud Foundry UAA allows a remote authenticated attacker holding only the zones.write authority to bypass the intended restriction that this authority does not grant access to the privileged uaa (system) identity zone, by referring to the zone identifier in a non-lowercase form (e.g. UAA) in the request path and body. The authorization layer performs a case-sensitive comparison against the system zone identifier, while the underlying MySQL persistence layer resolves identifiers case-insensitively under its default collation, so the request is authorized incorrectly and is then resolved against the real system zone record. This allows the attacker to overwrite the system zone's JWT signing key with attacker-controlled key material, forge JWTs claiming the admin client and administrator scopes, and fully compromise UAA and any Cloud Foundry deployment that trusts it. This issue only affects UAA deployments backed by MySQL using its default collation; PostgreSQL and HSQLDB backends are not affected.
Severity
8.7 (High)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 13:08 UTC
CWE
  • CWE-178 - Improper Handling of Case Sensitivity
Assigner
References
Impacted products
Vendor Product Version
Cloud Foundry UAA Affected: 0 , < 78.16.0 (semver)
Unaffected: 78.16.0 (semver)
Create a notification for this product.
Cloud Foundry cf-deployment Affected: 0 , < 57.0.0 (semver)
Unaffected: 57.0.0 (semver)
Create a notification for this product.
Credits
Doyensec
Show details on NVD website
To clipboard 

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