CVE-2026-59396 (GCVE-0-2026-59396)

Vulnerability from cvelistv5 – Published: 2026-10-30 08:24 – Updated: 2026-10-30 20:10
VLAI
Title
DoS Vulnerability in UAA Related to JWKS URI Handling
Summary
A denial-of-service vulnerability exists in UAA's private_key_jwt client-authentication mechanism. When UAA retrieves a remote JWKS URI, it caches the response. Invalid authentication attempts can trigger full deserialization of this cached data. An attacker with prerequisites (write access to clients or a compromised endpoint) can send anonymous requests that force repeated parsing of large cached objects, causing excessive CPU usage and potential Java heap exhaustion via OutOfMemoryError, resulting in service unavailability.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
4.9 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-30 15:28 UTC
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
vmware CNA under the mitre root
CNA scorecard C 64/100 over 233 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Cloud Foundry UAA Affected: 76.23.0 , < 79.9.0 (OSS)
guessed Create a notification for this product.
Cloud Foundry cf-deployment Affected: 0 , < 60.11.0 (oss)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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