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CVE-2026-40973 (GCVE-0-2026-40973)

Vulnerability from cvelistv5 – Published: 2026-04-27 23:29 – Updated: 2026-04-29 03:55
VLAI
Summary
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.
Severity
7 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-28 00:00 UTC
CWE
  • CWE-377 - Insecure Temporary File
Assigner
References
Impacted products
Vendor Product Version CPE status
Spring Spring Boot Affected: 4.0.0 , < 4.0.6 (custom)
Affected: 3.5.0 , < 3.5.14 (custom)
Affected: 3.4.0 , < 3.4.16 (custom)
Affected: 3.3.0 , < 3.3.19 (custom)
Affected: 2.7.0 , < 2.7.33 (custom)
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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