{"action":"Upgrade python3.13 to 3.13.5-2+deb13u1 or later.","affected":[{"fixed":"3.13.5-2+deb13u1","introduced":"0"}],"component":"python3.13","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["3.13.5-2+deb13u1"],"id":"tcs_01M5NQF0XAWW7CJ4Q2HHPGGYWQ","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:13/python3.13","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."}