{"id":"CVE-2026-40973","state":"PUBLISHED","title":"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 `tru","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.\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.","publishedAt":"2026-04-27T23:29:51.946Z","updatedAt":"2026-04-29T03:55:43.148Z","severity":{"score":7,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"vmware"},"assigner":"vmware","products":["Spring Spring Boot"],"affected":[{"vendor":"Spring","product":"Spring Boot","defaultStatus":"unaffected","versions":[{"version":"4.0.0","status":"affected","lessThan":"4.0.6","versionType":"custom"},{"version":"3.5.0","status":"affected","lessThan":"3.5.14","versionType":"custom"},{"version":"3.4.0","status":"affected","lessThan":"3.4.16","versionType":"custom"},{"version":"3.3.0","status":"affected","lessThan":"3.3.19","versionType":"custom"},{"version":"2.7.0","status":"affected","lessThan":"2.7.33","versionType":"custom"}]}],"references":["https://spring.io/security/cve-2026-40973"],"weaknesses":["CWE-377"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/40xxx/CVE-2026-40973.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40973","state":"PUBLISHED","datePublished":"2026-04-27T23:29:51.946Z","dateUpdated":"2026-04-29T03:55:43.148Z","assignerShortName":"vmware","assignerOrgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","dateReserved":"2026-04-16T02:18:56.133Z"},"containers":{"cna":{"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."}],"affected":[{"vendor":"Spring","product":"Spring Boot","defaultStatus":"unaffected","versions":[{"version":"4.0.0","status":"affected","lessThan":"4.0.6","versionType":"custom"},{"version":"3.5.0","status":"affected","lessThan":"3.5.14","versionType":"custom"},{"version":"3.4.0","status":"affected","lessThan":"3.4.16","versionType":"custom"},{"version":"3.3.0","status":"affected","lessThan":"3.3.19","versionType":"custom"},{"version":"2.7.0","status":"affected","lessThan":"2.7.33","versionType":"custom"}]}],"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-377","lang":"en","description":"CWE-377: Insecure Temporary File","type":"CWE"}]}],"providerMetadata":{"shortName":"vmware","orgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","dateUpdated":"2026-04-27T23:29:51.946Z"},"impacts":[{"descriptions":[{"lang":"en","value":"Per CVSS v3.1: Confidentiality HIGH; Integrity HIGH; Availability HIGH."}]}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.1"}},"adp":[{"title":"CISA ADP Vulnrichment","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"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-29T03:55:43.148Z"}}]}}}