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CVE-2026-40973

35
FAUCET Score

A local attacker on the same host as the application may be able to take control of the directory used by `ApplicationTemp`. When `server.servlet.session.persistent` is set to `true` and the attack persists across application restarts, this may allow the attacker to read session information and hijack authenticated users or deploy a gadget chain and execute code as the application's user. 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); predictable temp directory / `ApplicationTemp` ownership verification. Versions that are no longer supported are also affected per vendor advisory.

First published: Apr 27, 2026Last modified: Apr 29, 2026

Impacted Technologies

VendorProductVersion(s)CPE
< 2.7.33CPE matchmatch criteria
cpe:2.3:a:vmware:spring_boot:*:*:*:*:*:*:*:*
>= 3.3.0, < 3.3.19CPE matchmatch criteria
cpe:2.3:a:vmware:spring_boot:*:*:*:*:*:*:*:*
>= 3.4.0, < 3.4.16CPE matchmatch criteria
cpe:2.3:a:vmware:spring_boot:*:*:*:*:*:*:*:*
>= 3.5.0, < 3.5.14CPE matchmatch criteria
cpe:2.3:a:vmware:spring_boot:*:*:*:*:*:*:*:*
>= 4.0.0, < 4.0.6CPE matchmatch criteria
cpe:2.3:a:vmware:spring_boot:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.0HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.0
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.14%
Probability of exploitation in next 30 days
EPSS Percentile
3.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0014 is in the 17th percentile among its peer group of 1,516 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.4 InfoSec Media, 0.1 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

mavenpatch availablevia ghsa
Product: org.springframework.boot:spring-bootFixed in: 4.0.6
mavenpatch availablevia ghsa
Product: org.springframework.boot:spring-bootFixed in: 3.5.14

Vendor Advisories (1)

mavenGHSA-wwpq-f5c3-7hvxhigh

Spring Boot accepts predictable temp directory without ownership verification

Apr 28, 2026

References

spring.io / security/cve-2026-40973
Vendor Advisory