{"action":"Upgrade aiosmtpd to 1.4.5 or later.","affected":[{"fixed":"1.4.5","introduced":"0"}],"component":"aiosmtpd","cve_ids":["CVE-2024-27305"],"ecosystem":"PyPI","epss":0.00374,"exploited":false,"fixed_versions":["1.4.5"],"ghsa_id":"GHSA-pr2m-px7j-xg65","id":"tcs_01M5KGMJDPC5786V7D0NA8C3X3","modified_at":"2026-06-10T17:14:17.101220621Z","published_at":"2024-03-12T21:15:58Z","references":["https://osv.dev/vulnerability/PYSEC-2024-221","https://github.com/aio-libs/aiosmtpd/security/advisories/GHSA-pr2m-px7j-xg65","https://github.com/aio-libs/aiosmtpd/commit/24b6c79c8921cf1800e27ca144f4f37023982bbb","https://www.postfix.org/smtp-smuggling.html","https://github.com/advisories/GHSA-pr2m-px7j-xg65"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"PYSEC-2024-221","url":"https://osv.dev/vulnerability/PYSEC-2024-221"}],"summary":"aiosmtpd is a reimplementation of the Python stdlib smtpd.py based on asyncio. aiosmtpd is vulnerable to inbound SMTP smuggling. SMTP smuggling is a novel vulnerability based on not so novel interpret"}