{"cve":"CVE-2020-5407","nvd":{"published":"2020-05-13T17:15:11.967","modified":"2026-06-17T03:21:26.190","status":"Modified","description":"Spring Security versions 5.2.x prior to 5.2.4 and 5.3.x prior to 5.3.2 contain a signature wrapping vulnerability during SAML response validation. When 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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-347"],"references":["https://lists.apache.org/thread.html/r73af928cf64bebf78b7fa4bc56a5253273ec7829f5f5827f64c72fc7%40%3Cissues.servicemix.apache.org%3E","https://lists.apache.org/thread.html/ra19a4e7236877fe12bfb52db07b27ad72d9e7a9f5e27bba7e928e18a%40%3Cdev.geode.apache.org%3E","https://lists.apache.org/thread.html/rd99601fbca514f214f88f9e53fd5be3cfbff05b350c994b4ec2e184c%40%3Cdev.geode.apache.org%3E","https://tanzu.vmware.com/security/cve-2020-5407","https://www.oracle.com/security-alerts/cpuApr2021.html"],"products":["pivotal_software:spring_security"],"source":"nvd","synced_at":"2026-10-19T21:04:18.695612450+00:00"},"epss":{"cve":"CVE-2020-5407","score":0.01199,"percentile":0.68155,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-48rw-j489-928m","url":"https://osv.dev/vulnerability/GHSA-48rw-j489-928m","summary":"Signature wrapping vulnerability in Spring Security","modified":"2023-11-08T04:03:55.226562Z","packages":[{"ecosystem":"Maven","name":"org.springframework.security:spring-security-core","purl":"pkg:maven/org.springframework.security/spring-security-core","ranges":[">=5.2.0 <5.2.4"],"fixed":["5.2.4"]},{"ecosystem":"Maven","name":"org.springframework.security:spring-security-core","purl":"pkg:maven/org.springframework.security/spring-security-core","ranges":[">=5.3.0 <5.3.2"],"fixed":["5.3.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}