{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40973","assignerOrgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","state":"PUBLISHED","assignerShortName":"vmware","dateReserved":"2026-04-16T02:18:56.133Z","datePublished":"2026-04-27T23:29:51.946Z","dateUpdated":"2026-04-29T03:55:43.148Z"},"containers":{"cna":{"providerMetadata":{"orgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","shortName":"vmware","dateUpdated":"2026-04-27T23:29:51.946Z"},"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-377: Insecure Temporary File","type":"CWE","cweId":"CWE-377"}]}],"impacts":[{"descriptions":[{"lang":"en","value":"Per CVSS v3.1: Confidentiality HIGH; Integrity HIGH; Availability HIGH."}]}],"affected":[{"vendor":"Spring","product":"Spring Boot","versions":[{"status":"affected","version":"4.0.0","lessThan":"4.0.6","versionType":"custom"},{"status":"affected","version":"3.5.0","lessThan":"3.5.14","versionType":"custom"},{"status":"affected","version":"3.4.0","lessThan":"3.4.16","versionType":"custom"},{"status":"affected","version":"3.3.0","lessThan":"3.3.19","versionType":"custom"},{"status":"affected","version":"2.7.0","lessThan":"2.7.33","versionType":"custom"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"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.\n\nAffected: 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.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>A local attacker on the same host as the application may be able to take control of the directory used by <code>ApplicationTemp</code>. When <code>server.servlet.session.persistent</code> is set to <code>true</code> 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.</p><p>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 / <code>ApplicationTemp</code> ownership verification. Versions that are no longer supported are also affected per vendor advisory.</p>"}]}],"references":[{"url":"https://spring.io/security/cve-2026-40973"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":7,"baseSeverity":"HIGH"}}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.1"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-28T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-40973"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-04-29T03:55:43.148Z"}}]}}