{"id":"CLEANSTART-2024-OY41023","summary":"OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client","details":"CVE-2021-3449 affects multiple packages. An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. See references for individual vulnerability details.","modified":"2026-10-31T16:00:30.880747300Z","published":"2026-10-31T14:15:24.103450Z","upstream":["CVE-2021-3449"],"database_specific":{},"references":[{"type":"ADVISORY","url":"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2024/CLEANSTART-2024-OY41023.json"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2021-3449"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3449"}],"affected":[{"package":{"name":"synapse","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/synapse"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.30.1-r0"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2024/CLEANSTART-2024-OY41023.json"}},{"package":{"name":"openssl1.1-compat","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/openssl1.1-compat"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.1k-r0"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2024/CLEANSTART-2024-OY41023.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}