{"id":"JLSEC-2025-227","summary":"Mbed TLS before 2.28.10 and 3.x before 3.6.3, on the client side, accepts servers that have trusted...","details":"Mbed TLS before 2.28.10 and 3.x before 3.6.3, on the client side, accepts servers that have trusted certificates for arbitrary hostnames unless the TLS client application calls `mbedtls_ssl_set_hostname`.","modified":"2026-07-23T22:30:22.732620912Z","published":"2025-11-21T15:59:04.054Z","upstream":["CVE-2025-27809"],"database_specific":{"license":"CC-BY-4.0","sources":[{"modified":"2026-06-17T09:04:15.590Z","published":"2025-03-25T06:15:41Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2025-27809","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2025-27809","database_specific":{"status":"Analyzed"},"id":"CVE-2025-27809","imported":"2026-07-17T20:47:14.980Z"}]},"references":[{"type":"WEB","url":"https://github.com/Mbed-TLS/mbedtls/issues/466"},{"type":"WEB","url":"https://github.com/Mbed-TLS/mbedtls/releases"},{"type":"WEB","url":"https://mastodon.social/@bagder/114219540623402700"},{"type":"WEB","url":"https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2025-03-1/"}],"affected":[{"package":{"name":"MbedTLS_jll","ecosystem":"Julia","purl":"pkg:julia/MbedTLS_jll?uuid=c8ffd9c3-330d-5841-b78e-0817d7145fa1"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.28.10+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2025/JLSEC-2025-227.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"}]}