Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) in Spring Boot - CVE-2026-40975

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Main Vulnerability Database Vulnerabilities #VU128234

Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) in Spring Boot - CVE-2026-40975

Published: April 27, 2026


Vulnerability identifier: #VU128234
CSH Severity: Medium
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-40975
CWE-ID: CWE-338
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to disclose sensitive information and compromise integrity of secret-dependent operations.

The vulnerability exists due to the use of a weak pseudorandom number generator in the random value property source when generating values with ${random.value}. A remote attacker can predict generated values to disclose sensitive information and compromise integrity of secret-dependent operations.

${random.uuid} is not affected, and ${random.int} and ${random.long} should never be used for secrets because they are numeric values with a predictable range.


Affected software

Spring Boot
Library Support for Spring
IBM Sterling Control Center
IBM InfoSphere Information Server
MongoDB Enterprise Advanced with IBM
JBoss Data Grid

How to mitigate CVE-2026-40975

Install security update from vendor's website.

Spring Boot - addressed in versions 2.7.33, 3.3.19, 3.4.16, 3.5.14, 4.0.6
Library Support for Spring - update to 3.4.18
IBM Sterling Control Center - addressed in versions 6.3.1.0.9, 6.4.1.0.3, 6.4.2.0.4
IBM InfoSphere Information Server - update to 11.7.1.6 Service pack 3
MongoDB Enterprise Advanced with IBM - update to 1.16.0
JBoss Data Grid - update to 8.6.1

External References

Related Security Bulletins