{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Spring Security",
          "vendor": "Spring",
          "versions": [
            {
              "lessThan": "5.7.24",
              "status": "affected",
              "version": "5.7.0",
              "versionType": "custom"
            },
            {
              "lessThan": "5.8.26",
              "status": "affected",
              "version": "5.8.0",
              "versionType": "custom"
            },
            {
              "lessThan": "6.3.17",
              "status": "affected",
              "version": "6.3.0",
              "versionType": "custom"
            },
            {
              "lessThan": "6.4.17",
              "status": "affected",
              "version": "6.4.0",
              "versionType": "custom"
            },
            {
              "lessThan": "6.5.11",
              "status": "affected",
              "version": "6.5.0",
              "versionType": "custom"
            },
            {
              "lessThan": "7.0.6",
              "status": "affected",
              "version": "7.0.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "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."
            }
          ],
          "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."
        }
      ],
      "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."
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-09T23:46:15.589Z",
        "orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d",
        "shortName": "vmware"
      },
      "references": [
        {
          "url": "https://spring.io/security/cve-2026-40988"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Unbounded DEFLATE Inflation in SAML 2.0 Service Provider",
      "x_generator": {
        "engine": "Vulnogram 1.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d",
    "assignerShortName": "vmware",
    "cveId": "CVE-2026-40988",
    "datePublished": "2026-06-09T23:46:15.589Z",
    "dateReserved": "2026-04-16T02:19:09.389Z",
    "dateUpdated": "2026-06-09T23:46:15.589Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}