CVE-2026-40975

State: Published
Severity: 4.8 Medium
Published: Apr 27, 2026
Updated: Jul 15, 2026
Reserved: Apr 16, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	4.8 Medium	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N	vmware
3.1	8.2 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N	redhat-SADP

Weaknesses

CWE-330 Use of Insufficiently Random Values
CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

Affected Products

Product	Versions
Spring BootSpring	4.0.0 to before 4.0.6Affected 3.5.0 to before 3.5.14Affected 3.4.0 to before 3.4.16Affected 3.3.0 to before 3.3.19Affected 2.7.0 to before 2.7.33Affected

References

https://spring.io/security/cve-2026-40975
https://access.redhat.com/security/cve/CVE-2026-40975vdb-entry
RHBZ#2463331issue-tracking
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40975.json
https://access.redhat.com/errata/RHSA-2026:25089vendor-advisory
https://access.redhat.com/errata/RHSA-2026:22619vendor-advisory
https://access.redhat.com/errata/RHSA-2026:21772vendor-advisory
https://access.redhat.com/errata/RHSA-2026:17668vendor-advisory

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