CVE-2026-59335Network attack vector

Full identity-server takeover via mixed-case zone ID

Published Aug 25, 2026 · Updated Aug 25, 2026

Authorization bypass in Cloud Foundry UAA before 78.16.0 allows remote authenticated users to take over UAA via the identity zone API. The endpoint compares the privileged uaa zone ID case-sensitively, but MySQL's default collation resolves mixed-case IDs to that zone, allowing its JWT signing key to be overwritten. Exploitation requires zones.write authority and a MySQL backend using the default collation; PostgreSQL and HSQLDB are unaffected.

CVSS severity7.7
High
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Cloud Foundry UAA before 78.16.0 allows remote authenticated users to take over UAA via the identity zone API. The endpoint compares the privileged uaa zone ID case-sensitively, but MySQL's default collation resolves mixed-case IDs to that zone, allowing its JWT signing key to be overwritten. Exploitation requires zones.write authority and a MySQL backend using the default collation; PostgreSQL and HSQLDB are unaffected.

The record

CVE
CVE-2026-59335
Published
Aug 25, 2026
Updated
Aug 25, 2026
Vendor
Cloud Foundry Foundation
Product
cf-deployment
Classifications
CWE-178, T1606
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <57.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Cloud Foundry Foundation · cf-deploymentversion=0 <57.0.0
Cloud Foundry Foundation · User Account and Authentication (UAA)version=0 <78.16.0

Published CVSS scores

7.7Cloud Foundry FoundationCVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
8.7Cloud Foundry FoundationCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-178Improper Handling of Case Sensitivity
T1606Forge Web Credentials

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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