{"id":"PSF-2023-2","summary":"Parsing errors in email/_parseaddr.py lead to incorrect value in email address part of tuple","details":"The email module of Python through 3.11.3 incorrectly parses e-mail addresses that contain a special character. The wrong portion of an RFC2822 header is identified as the value of the addr-spec. In some applications, an attacker can bypass a protection mechanism in which application access is granted only after verifying receipt of e-mail to a specific domain (e.g., only @company.example.com addresses may be used for signup). This occurs in email/_parseaddr.py in recent versions of Python.","aliases":["BIT-libpython-2023-27043","BIT-python-2023-27043","BIT-python-min-2023-27043","CVE-2023-27043"],"modified":"2025-09-19T01:44:53.330336Z","published":"2023-04-18T00:00:00Z","database_specific":{"cwe_ids":["CWE-20"]},"references":[{"type":"REPORT","url":"https://github.com/python/cpython/issues/102988"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/python/cpython","events":[{"introduced":"0"},{"fixed":"4a153a1d3b18803a684cd1bcc2cdf3ede3dbae19"}]}],"versions":["2.5","3.2","v0.9.8","v0.9.9","v1.0.1","v1.0.2","v1.1","v1.1.1","v1.2","v1.2b1","v1.2b2","v1.2b3","v1.2b4","v1.3","v1.3b1","v1.4","v1.4b1","v1.4b2","v1.4b3","v1.5","v1.5.1","v1.5.2","v1.5.2a1","v1.5.2a2","v1.5.2b1","v1.5.2b2","v1.5.2c1","v1.5a1","v1.5a2","v1.5a3","v1.5a4","v1.5b1","v1.5b2","v1.6a1","v1.6a2","v2.0","v2.0b1","v2.0b2","v2.0c1","v2.1","v2.1a1","v2.1a2","v2.1b1","v2.1b2","v2.1c1","v2.1c2","v2.2a3","v2.3c1","v2.3c2","v2.4","v2.4a1","v2.4a2","v2.4a3","v2.4b1","v2.4b2","v2.4c1","v2.5","v2.5.1","v2.5.1c1","v2.5.2","v2.5.2c1","v2.5.3","v2.5.3c1","v2.5.4","v2.5.5","v2.5.5c1","v2.5.5c2","v2.5.6","v2.5.6c1","v2.5a0","v2.5a1","v2.5a2","v2.5b1","v2.5b2","v2.5b3","v2.5c1","v2.5c2","v2.6","v2.6.1","v2.6.2","v2.6.2c1","v2.6.3","v2.6.3rc1","v2.6.4","v2.6.4rc1","v2.6.4rc2","v2.6.5","v2.6.5rc1","v2.6.5rc2","v2.6.6","v2.6.6rc1","v2.6.6rc2","v2.6.7","v2.6.8","v2.6.8rc1","v2.6.8rc2","v2.6a1","v2.6a2","v2.6a3","v2.6b1","v2.6b2","v2.6b3","v2.6rc1","v2.6rc2","v2.7","v2.7.1","v2.7.1rc1","v2.7.2","v2.7.2rc1","v2.7.3","v2.7.3rc1","v2.7.3rc2","v2.7.4rc1","v2.7a1","v2.7a2","v2.7a3","v2.7a4","v2.7b1","v2.7b2","v2.7rc1","v2.7rc2","v3.0a1","v3.0a2","v3.0a3","v3.0a4","v3.0a5","v3.0b1","v3.0b2","v3.0b3","v3.0rc1","v3.0rc2","v3.0rc3","v3.1","v3.1.1","v3.1.1rc1","v3.1.2","v3.1.2rc1","v3.1.3","v3.1.3rc1","v3.1.4","v3.1.4rc1","v3.1.5","v3.1.5rc1","v3.1.5rc2","v3.10.0a1","v3.10.0a2","v3.10.0a3","v3.10.0a4","v3.10.0a5","v3.10.0a6","v3.10.0a7","v3.11.0a1","v3.11.0a2","v3.11.0a3","v3.11.0a4","v3.11.0a5","v3.11.0a6","v3.11.0a7","v3.11.0b1","v3.12.0a1","v3.12.0a2","v3.12.0a3","v3.12.0a4","v3.12.0a5","v3.12.0a6","v3.12.0a7","v3.12.0b1","v3.13.0a1","v3.13.0a2","v3.1a1","v3.1a2","v3.1b1","v3.1rc1","v3.1rc2","v3.2","v3.2.1","v3.2.1b1","v3.2.1rc1","v3.2.1rc2","v3.2.2","v3.2.2rc1","v3.2.3","v3.2.3rc1","v3.2.3rc2","v3.2.4","v3.2.4rc1","v3.2.5","v3.2.6","v3.2.6rc1","v3.2a1","v3.2a2","v3.2a3","v3.2a4","v3.2b1","v3.2b2","v3.2rc1","v3.2rc2","v3.2rc3","v3.3.0","v3.3.0a1","v3.3.0a2","v3.3.0a3","v3.3.0a4","v3.3.0b1","v3.3.0b2","v3.3.0rc1","v3.3.0rc2","v3.3.0rc3","v3.3.1","v3.3.1rc1","v3.3.2","v3.3.3","v3.3.3rc1","v3.3.3rc2","v3.3.4","v3.3.4rc1","v3.3.5","v3.3.5rc1","v3.3.5rc2","v3.3.6","v3.3.6rc1","v3.4.0","v3.4.0a1","v3.4.0a2","v3.4.0a3","v3.4.0a4","v3.4.0b1","v3.4.0b2","v3.4.0b3","v3.4.0rc1","v3.4.0rc2","v3.4.0rc3","v3.4.1","v3.4.1rc1","v3.4.2","v3.4.2rc1","v3.4.3","v3.4.3rc1","v3.4.4","v3.4.4rc1","v3.4.5","v3.4.5rc1","v3.4.6","v3.4.6rc1","v3.5.0","v3.5.0a1","v3.5.0a2","v3.5.0a3","v3.5.0a4","v3.5.0b1","v3.5.0b2","v3.5.0b3","v3.5.0b4","v3.5.0rc1","v3.5.0rc2","v3.5.0rc3","v3.5.0rc4","v3.5.1","v3.5.1rc1","v3.5.2","v3.5.2rc1","v3.5.3","v3.5.3rc1","v3.6.0","v3.6.0a1","v3.6.0a2","v3.6.0a3","v3.6.0a4","v3.6.0b1","v3.6.0b2","v3.6.0b3","v3.6.0b4","v3.6.0rc1","v3.6.0rc2","v3.7.0a1","v3.7.0a2","v3.7.0a3","v3.7.0a4","v3.8.0a1","v3.8.0a2","v3.8.0a3","v3.8.0a4","v3.8.0b1","v3.9.0a1","v3.9.0a2","v3.9.0a3","v3.9.0a4","v3.9.0a5","v3.9.0a6"],"database_specific":{"source":"https://github.com/psf/advisory-database/blob/main/advisories/python/PSF-2023-2.json"}}],"schema_version":"1.7.3"}