{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"python3.11","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":[],"id":"tcs_01M5NMWSA33NARRXVPR4CSXVGF","modified_at":"2026-10-16T14:00:07.873005891Z","published_at":"2026-01-21T20:16:04.423Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-12781","https://security-tracker.debian.org/tracker/CVE-2025-12781"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-12781#Debian:12/python3.11","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-12781"}],"summary":"When passing data to the b64decode(), standard_b64decode(), and urlsafe_b64decode() functions in the \"base64\" module the characters \"+/\" will always be accepted, regardless of the value of \"altchars\""}