{"id":"CVE-2020-1677","aliases":["EUVD-2020-12539","GHSA-wx4h-wgr2-66h2"],"status":"published","title":"Juniper Networks Mist Cloud UI: SAML authentication attribute elements handling vulnerability.","description":"When SAML authentication is enabled, Juniper Networks Mist Cloud UI might incorrectly handle child elements in SAML responses, allowing a remote attacker to modify a valid SAML response without invalidating its cryptographic signature to bypass SAML authentication security controls. This issue affects all Juniper Networks Mist Cloud UI versions prior to September 2 2020.","severity":{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00425,"percentile":0.3719,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20","CWE-345"],"published":"2020-10-16T20:31:33Z","modified":"2026-06-17T03:02:10Z","products":[{"vendor":"juniper","product":"mist_cloud_ui"},{"vendor":"juniper networks","product":"mist cloud ui"}],"references":[{"url":"https://kb.juniper.net/JSA11072","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-1677"},{"url":"https://github.com/advisories/GHSA-wx4h-wgr2-66h2"}],"sources":{"cve":[{"id":"CVE-2020-1677","title":"Juniper Networks Mist Cloud UI: SAML authentication attribute elements handling vulnerability.","description":"When SAML authentication is enabled, Juniper Networks Mist Cloud UI might incorrectly handle child elements in SAML responses, allowing a remote attacker to modify a valid SAML response without invalidating its cryptographic signature to bypass SAML authentication security controls. This issue affects all Juniper Networks Mist Cloud UI versions prior to September 2 2020.","status":"published","published":"2020-10-16T20:31:33.264Z","modified":"2024-09-16T22:02:21.346Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:35:56.213477Z"}],"euvd":[{"id":"EUVD-2020-12539","description":"When SAML authentication is enabled, Juniper Networks Mist Cloud UI might incorrectly handle child elements in SAML responses, allowing a remote attacker to modify a valid SAML response without invalidating its cryptographic signature to bypass SAML authentication security controls. This issue affects all Juniper Networks Mist Cloud UI versions prior to September 2 2020.","status":"published","published":"2020-10-16T20:31:33Z","modified":"2024-09-16T22:02:21Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high"}],"updated_at":"2026-11-03T00:55:06.207566Z"}],"ghsa":[{"id":"GHSA-wx4h-wgr2-66h2","title":"When SAML authentication is enabled, Juniper Networks Mist Cloud UI might incorrectly handle...","description":"When SAML authentication is enabled, Juniper Networks Mist Cloud UI might incorrectly handle child elements in SAML responses, allowing a remote attacker to modify a valid SAML response without invalidating its cryptographic signature to bypass SAML authentication security controls. This issue affects all Juniper Networks Mist Cloud UI versions prior to September 2 2020.","status":"published","published":"2022-05-24T17:30:52Z","modified":"2023-01-29T05:04:20Z","cwes":["CWE-20","CWE-345"],"updated_at":"2026-11-02T14:45:31.69314Z"}],"nvd":[{"id":"CVE-2020-1677","description":"When SAML authentication is enabled, Juniper Networks Mist Cloud UI might incorrectly handle child elements in SAML responses, allowing a remote attacker to modify a valid SAML response without invalidating its cryptographic signature to bypass SAML authentication security controls. This issue affects all Juniper Networks Mist Cloud UI versions prior to September 2 2020.","status":"published","published":"2020-10-16T21:15:13.55Z","modified":"2026-06-17T03:02:10.87Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high","assessor":"secondary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-20","CWE-345"],"updated_at":"2026-11-02T14:06:19.351389Z"}]}}