Java
CVE-2026-40975
HIGH
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Confidentiality-only impact with no patch-side privilege need, but AC:H because exploitation depends on the app using these placeholders for secrets and on predicting a weak PRNG.
Primary rating from NVD.
CVSS VectorNVD
Lifecycle Timeline
11Blast Radius
ecosystem impact- 16 maven packages depend on org.springframework.boot:spring-boot-cassandra (5 direct, 11 indirect)
Ecosystem-wide dependent count for version 4.0.0.
DescriptionNVD
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.
AnalysisAI
Predictable secret generation in Spring Boot's random value property source allows remote, unauthenticated attackers to obtain potentially sensitive values. Affected versions include Spring Boot 4.0.0 to 4.0.5, 3.5.x, 3.4.x, 3.3.x, and 2.7.x before the respective patch releases. The vulnerability has a CVSS score of 7.5 (High) but no active exploitation has been confirmed, and EPSS suggests a very low likelihood of exploitation.
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