{"action":"Upgrade pypy3 to 7.3.21+dfsg-1 or later.","affected":[{"fixed":"7.3.21+dfsg-1","introduced":"0"}],"component":"pypy3","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["7.3.21+dfsg-1"],"id":"tcs_01M5NQF0Q9AQQ2MNX30E49EHHB","modified_at":"2026-10-01T03:02:13.500297629Z","published_at":"2026-01-23T17:16:12.977Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-1299","https://security-tracker.debian.org/tracker/CVE-2026-1299"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-1299#Debian:14/pypy3","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-1299"}],"summary":"The email module, specifically the \"BytesGenerator\" class, didn’t properly quote newlines for email headers when serializing an email message allowing for header injection when an email is serialized."}