CVE-2026-40972

HIGH

7.5

CVSS Score

Published: April 27, 2026 at 11:15 PM UTC

Updated: July 24, 2026 at 09:20 PM UTC

2 products affected across 2 vendorsSpring BootSpring Boot

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Severity

HIGH7.5

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Spring Boot · VMware

95%

v < 2.7.333.3.0 ≤ v < 3.3.193.4.0 ≤ v < 3.4.163.5.0 ≤ v < 3.5.144.0.0 ≤ v < 4.0.6

Affected range stops below 2.7.33, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.3.19, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.4.16, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.5.14, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.0.6, so it looks safe — our inference, not a vendor statement

Spring Boot · Spring

60%

2.7.0 ≤ v < 2.7.333.3.0 ≤ v < 3.3.193.4.0 ≤ v < 3.4.163.5.0 ≤ v < 3.5.144.0.0 ≤ v < 4.0.62.7.0 3.3.0 3.4.0 3.5.0 4.0.0

Affected range stops below 2.7.33, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.3.19, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.4.16, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.5.14, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.0.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://spring.io/security/cve-2026-40972

References (1)

Vendor Advisory

Source: cverecord

https://spring.io/security/cve-2026-40972

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHvmware

Attack Vector: ADJACENT_NETWORK
Complexity: HIGH
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-208

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