Improper access control in Spring Cloud Function - CVE-2026-59299
Published: August 31, 2026
Vulnerability identifier: #VU146390
CSH Severity: Low
CVSS v4: 1.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-59299
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose sensitive information and modify data.
The vulnerability exists due to improper access control in composition lookup in Spring Cloud Function when resolving composed functions. A remote privileged user can poison the base function lookup to disclose sensitive information and modify data.
User interaction is required.
Affected software
Spring Cloud Function
How to mitigate CVE-2026-59299
Install security update from vendor's website.
Spring Cloud Function - addressed in versions 3.2.17, 4.2.8, 4.3.5, 5.0.4