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Verification of Cryptographic Signature\nWhen using the spring-security-saml2-service-provider component, a malicious user can carefully modify an otherwise valid SAML response and append an arbitrary assertion that Spring Security will accept as valid.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2020-5407","reference_id":"","reference_type":"","scores":[{"value":"0.00665","scoring_system":"epss","scoring_elements":"0.71599","published_at":"2026-06-04T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2020-5407"},{"reference_url":"https://lists.apache.org/thread.html/r73af928cf64bebf78b7fa4bc56a5253273ec7829f5f5827f64c72fc7@%3Cissues.servicemix.apache.org%3E","reference_id":"","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.apache.org/thread.html/r73af928cf64bebf78b7fa4bc56a5253273ec7829f5f5827f64c72fc7@%3Cissues.servicemix.apache.org%3E"},{"reference_url":"https://lists.apache.org/thread.html/ra19a4e7236877fe12bfb52db07b27ad72d9e7a9f5e27bba7e928e18a@%3Cdev.geode.apache.org%3E","reference_id":"","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.apache.org/thread.html/ra19a4e7236877fe12bfb52db07b27ad72d9e7a9f5e27bba7e928e18a@%3Cdev.geode.apache.org%3E"},{"reference_url":"https://lists.apache.org/thread.html/rd99601fbca514f214f88f9e53fd5be3cfbff05b350c994b4ec2e184c@%3Cdev.geode.apache.org%3E","reference_id":"","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.apache.org/thread.html/rd99601fbca514f214f88f9e53fd5be3cfbff05b350c994b4ec2e184c@%3Cdev.geode.apache.org%3E"},{"reference_url":"https://www.oracle.com/security-alerts/cpuApr2021.html","reference_id":"","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.oracle.com/security-alerts/cpuApr2021.html"},{"reference_url":"https://www.oracle.com/security-alerts/cpujan2021.html","reference_id":"","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.oracle.com/security-alerts/cpujan2021.html"},{"reference_url":"https://www.oracle.com/security-alerts/cpuoct2020.html","reference_id":"","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.oracle.com/security-alerts/cpuoct2020.html"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5407","reference_id":"CVE-2020-5407","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5407"},{"reference_url":"https://tanzu.vmware.com/security/cve-2020-5407","reference_id":"CVE-2020-5407","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://tanzu.vmware.com/security/cve-2020-5407"},{"reference_url":"https://github.com/advisories/GHSA-48rw-j489-928m","reference_id":"GHSA-48rw-j489-928m","reference_type":"","scores":[],"url":"https://github.com/advisories/GHSA-48rw-j489-928m"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/77453?format=json","purl":"pkg:maven/org.springframework.security/spring-security-core@5.2.4","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/org.springframework.security/spring-security-core@5.2.4"},{"url":"http://public2.vulnerablecode.io/api/packages/77326?format=json","purl":"pkg:maven/org.springframework.security/spring-security-core@5.2.4.RELEASE","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-vh4r-sk3t-eqe3"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/org.springframework.security/spring-security-core@5.2.4.RELEASE"},{"url":"http://public2.vulnerablecode.io/api/packages/77454?format=json","purl":"pkg:maven/org.springframework.security/spring-security-core@5.3.2","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/org.springframework.security/spring-security-core@5.3.2"},{"url":"http://public2.vulnerablecode.io/api/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