{"id":"CLEANSTART-2026-AZ00076","summary":"Handshakes which used Encrypted Client Hello could be de-anonymized by a passive network observer due to a disclosure of pre-shared key identities in the unencrypted client hello","details":"Security vulnerability affects the temporal-server package. Handshakes which used Encrypted Client Hello could be de-anonymized by a passive network observer due to a disclosure of pre-shared key identities in the unencrypted client hello.","modified":"2026-10-08T16:47:03.856275513Z","published":"2026-10-06T00:36:14.782901Z","upstream":["CVE-2026-42505"],"database_specific":{},"references":[{"type":"ADVISORY","url":"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-AZ00076.json"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-42505"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42505"}],"affected":[{"package":{"name":"temporal-server","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/temporal-server"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.31.3-r3"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-AZ00076.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"}]}