Vulnerability details
CVE-2026-40973
Spring Boot
CVSS 3.1
7.0High
Official description
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.0High | 3.1 | CVEProject cvelistV5 (CNA) (vmware) | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Spring | Spring Boot | 2.7.0 ≤ v < 2.7.33 | CVEProject cvelistV5 (CNA) |
| Spring | Spring Boot | 3.3.0 ≤ v < 3.3.19 | CVEProject cvelistV5 (CNA) |
| Spring | Spring Boot | 3.4.0 ≤ v < 3.4.16 | CVEProject cvelistV5 (CNA) |
| Spring | Spring Boot | 3.5.0 ≤ v < 3.5.14 | CVEProject cvelistV5 (CNA) |
| Spring | Spring Boot | 4.0.0 ≤ v < 4.0.6 | CVEProject cvelistV5 (CNA) |
References and advisories
1
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Details
- Published
- 2026-04-28
- Last updated
- 2026-04-29
- State
- Published
- Assigner (CNA)
- vmware
Exploit prediction (EPSS)
0.13%
Probability of exploitation in 30 days
3%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-377Insecure Temporary File