CVE-2026-40975: Use of Insufficiently Random Values

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...