Cloud Foundry UAA Identity Zone Endpoint case sensitivity

Summaryinfo

A vulnerability labeled as problematic has been found in Cloud Foundry UAA. The impacted element is an unknown function of the component Identity Zone Endpoint. Such manipulation leads to case sensitivity. This vulnerability is documented as CVE-2026-59335. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Cloud Foundry UAA (the affected version unknown) and classified as problematic. Affected by this issue is an unknown part of the component Identity Zone Endpoint. The manipulation with an unknown input leads to a case sensitivity vulnerability. Using CWE to declare the problem leads to CWE-178. The product does not properly account for differences in case sensitivity when accessing or determining the properties of a resource, leading to inconsistent results. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at cloudfoundry.org. This vulnerability is handled as CVE-2026-59335 since 07/04/2026. The exploitation is known to be easy. The attack may be launched remotely. The exploitation needs additional levels of successful authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/25/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Cloud Software

Vendor

• Cloud Foundry

Name

• UAA

License

• free

CPE 2.3info

• 🔒

CPE 2.2info

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