CVE-2026-40975 — Spring / Spring Boot

Description (CNA)

Values produced by ${random.value} are not suitable for use as secrets. ${random.uuid} is not affected. ${random.int} and ${random.long} should never be used for secrets as they are numeric values with a predictable range. Affected: Spring Boot 4.0.0–4.0.5 (fix 4.0.6), 3.5.0–3.5.13 (fix 3.5.14), 3.4.0–3.4.15 (fix 3.4.16), 3.3.0–3.3.18 (fix 3.3.19), 2.7.0–2.7.32 (fix 2.7.33); random value property source / weak PRNG for secrets. Versions that are no longer supported are also affected per vendor advisory.

Affected (CNA)

Vendor / product	Versions
Spring / Spring Boot	affected 4.0.0 before 4.0.6; affected 3.5.0 before 3.5.14; affected 3.4.0 before 3.4.16; affected 3.3.0 before 3.3.19; affected 2.7.0 before 2.7.33

CWE

CWE-330

References

https://spring.io/security/cve-2026-40975

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

redhat-SADP

A flaw was found in Spring Boot. The `${random.value}` property source utilizes a weak pseudo-random number generator (PRNG), meaning the values it produces are not sufficiently random for use as cryptographic secrets. An attacker could potentially predict these values, which may lead to information disclosure or a security bypass if they are used in sensitive applications.