CVE-2026-40973: Spring Boot vulnerability
Spring · Spring Boot
Vendor fix available · Affected: Spring Boot · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 3% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Spring · Spring Bootfrom 4.0.0 before 4.0.6; from 3.5.0 before 3.5.14; from 3.4.0 before 3.4.16; from 3.3.0 before 3.3.19; from 2.7.0 before 2.7.33
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Weakness
- CWE-377 · File and Path Handling
- Vendor
- Spring
- Published
- April 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-40973 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.