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Vulnerability · Published Apr 27, 2026 · Assigned by vmware

CVE-2026-40975

Medium 4.8

In plain English

A medium-severity weak randomness in Spring Boot from Spring. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.8Medium
Exploit odds (30 days)0.3%top 75.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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 packages & fixed versions

EcosystemPackageFixed inAdvisory
Mavenorg.springframework.boot:spring-boot-cassandra4.0.6GHSA-m4x9-hx6x-2c43
Mavenorg.springframework.boot:spring-boot-cassandra3.5.14GHSA-m4x9-hx6x-2c43
Mavenorg.springframework.boot:spring-boot-cassandrano fix listedGHSA-m4x9-hx6x-2c43
Mavenorg.springframework.boot:spring-boot-cassandrano fix listedGHSA-m4x9-hx6x-2c43
Mavenorg.springframework.boot:spring-boot-cassandrano fix listedGHSA-m4x9-hx6x-2c43

Affected products (as reported)

VendorProductVersions
Spring Spring Boot 4.0.0 – before 4.0.63.5.0 – before 3.5.143.4.0 – before 3.4.163.3.0 – before 3.3.192.7.0 – before 2.7.33

Weakness: CWE-330, CWE-338 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

References