CVE-2026-40972 PUBLISHED

Assigner: vmware
Reserved: 16.04.2026 Published: 27.04.2026 Updated: 27.04.2026

An attacker on the same network as the remote application may be able to utilize a timing attack to discover information about the remote secret. In extreme circumstances this could result in the attacker determining the secret and uploading changed classes, thereby achieving remote code execution in the remote application.

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); DevTools remote secret comparison. Versions that are no longer supported are also affected per vendor advisory.

Metrics

CVSS Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 7.5

Product Status

Vendor Spring
Product Spring Boot
Versions Default: unaffected
  • affected from 4.0.0 to 4.0.6 (excl.)
  • affected from 3.5.0 to 3.5.14 (excl.)
  • affected from 3.4.0 to 3.4.16 (excl.)
  • affected from 3.3.0 to 3.3.19 (excl.)
  • affected from 2.7.0 to 2.7.33 (excl.)

References

Problem Types

  • CWE-208: Observable Timing Discrepancy CWE

Impacts

  • Per CVSS v3.1: Confidentiality HIGH; Integrity HIGH; Availability HIGH.