stringprep.map_table_b2() deviates from RFC 3454 Table B.2
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 6epss 0.6%
probabilidad de explotación
0.6%top 53% de las CVE
explotación observada
noninguna fuente lo reporta
The "stringprep" module didn't process characters from RFC 3454 tables
B.2 or B.3 correctly: the latest Unicode codepoint attributes were used
instead of the specified Unicode 3.2.0. This behavior would cause
mismatches when processing domain names using IDNA 2003 (the "idna"
codec) and the in_table_b2() function of the "stringprep" module. This
only affects domain names containing characters that were not previously
registered or had their Unicode attributes such as case-folding
behavior updated since Unicode 3.2.0.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Productos afectados
Python Software Foundation · CPythonReferencias
https://github.com/python/cpython/commit/1e54caa096678a38afcabecabb1ff72400dd6baehttps://github.com/python/cpython/commit/5181304bcec9cfc3c15311741c9154cdff2e3fd7https://github.com/python/cpython/commit/7e109d084d55e7eb25837a5f3b47ef9beee547bchttps://github.com/python/cpython/commit/c016c2535b74227fddf2cf7334dbfead6c930214https://github.com/python/cpython/commit/c28b121a4f0b975937c8b5a1b4934bb361d84296https://github.com/python/cpython/commit/c42790b34f634051750e5da340d17c7da19e4784https://github.com/python/cpython/issues/155292https://github.com/python/cpython/pull/155293https://mail.python.org/archives/list/security-announce@python.org/thread/EUHHTC6EV7HCLSUHP25C5VHSV4V2MUZN/http://www.openwall.com/lists/oss-security/2026/08/18/2