{"id":"CVE-2026-40988","state":"PUBLISHED","title":"Unbounded DEFLATE Inflation in SAML 2.0 Service Provider","description":"An application using spring-security-saml2-service-provider and the REDIRECT binding for SAML 2.0 Login or Logout may be vulnerable to a denial of service by way of an unbounded writer that inflates the compressed SAML payload into memory.\n\nAffected versions:\nSpring Security 5.7.0 through 5.7.23; 5.8.0 through 5.8.25; 6.3.0 through 6.3.16; 6.4.0 through 6.4.16; 6.5.0 through 6.5.10; 7.0.0 through 7.0.5.","publishedAt":"2026-06-09T23:46:15.589Z","updatedAt":"2026-06-27T21:22:39.249Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"vmware"},"assigner":"vmware","products":["Spring Spring Security"],"affected":[{"vendor":"Spring","product":"Spring Security","defaultStatus":"unaffected","versions":[{"version":"5.7.0","status":"affected","lessThan":"5.7.24","versionType":"custom"},{"version":"5.8.0","status":"affected","lessThan":"5.8.26","versionType":"custom"},{"version":"6.3.0","status":"affected","lessThan":"6.3.17","versionType":"custom"},{"version":"6.4.0","status":"affected","lessThan":"6.4.17","versionType":"custom"},{"version":"6.5.0","status":"affected","lessThan":"6.5.10.2","versionType":"custom"},{"version":"7.0.0","status":"affected","lessThan":"7.0.5.1","versionType":"custom"}]}],"references":["https://spring.io/security/cve-2026-40988"],"weaknesses":["CWE-400"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/40xxx/CVE-2026-40988.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40988","state":"PUBLISHED","datePublished":"2026-06-09T23:46:15.589Z","dateUpdated":"2026-06-27T21:22:39.249Z","assignerShortName":"vmware","assignerOrgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","dateReserved":"2026-04-16T02:19:09.389Z"},"containers":{"cna":{"title":"Unbounded DEFLATE Inflation in SAML 2.0 Service Provider","descriptions":[{"lang":"en","value":"An application using spring-security-saml2-service-provider and the REDIRECT binding for SAML 2.0 Login or Logout may be vulnerable to a denial of service by way of an unbounded writer that inflates the compressed SAML payload into memory.\n\nAffected versions:\nSpring Security 5.7.0 through 5.7.23; 5.8.0 through 5.8.25; 6.3.0 through 6.3.16; 6.4.0 through 6.4.16; 6.5.0 through 6.5.10; 7.0.0 through 7.0.5."}],"affected":[{"vendor":"Spring","product":"Spring Security","defaultStatus":"unaffected","versions":[{"version":"5.7.0","status":"affected","lessThan":"5.7.24","versionType":"custom"},{"version":"5.8.0","status":"affected","lessThan":"5.8.26","versionType":"custom"},{"version":"6.3.0","status":"affected","lessThan":"6.3.17","versionType":"custom"},{"version":"6.4.0","status":"affected","lessThan":"6.4.17","versionType":"custom"},{"version":"6.5.0","status":"affected","lessThan":"6.5.10.2","versionType":"custom"},{"version":"7.0.0","status":"affected","lessThan":"7.0.5.1","versionType":"custom"}]}],"references":[{"url":"https://spring.io/security/cve-2026-40988"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseSeverity":"HIGH","baseScore":7.5,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]}],"providerMetadata":{"shortName":"vmware","orgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","dateUpdated":"2026-06-27T21:22:39.249Z"},"impacts":[{"descriptions":[{"lang":"en","value":"An unauthenticated remote attacker can cause denial of service by sending a crafted SAML REDIRECT binding request that inflates an unbounded compressed payload into memory."}]}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.1"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-10T18:08:29.853478Z","id":"CVE-2026-40988","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-10T18:08:45.288Z"}}]}}}