CVE-2026-17084
mediumPriorität · verfolgen · 0EPSS 0.007 · 54. PerzentilDEUSEPSS · bewertet 2026-10-22
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.
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Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · low–medium · 2.3–6
SSVC
Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.
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betroffene Produkte (23)
Betroffene Produkte und Versionsbereiche.
Advisories (5)
Hersteller- und Ökosystem-Meldungen dazu.
- WID-SEC-W-2026-2924CPython: Mehrere SchwachstellenDeutsch2026-08-18csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in CPython ausnutzen, um Informationen offenzulegen und um nicht näher spezifizierte Auswirkungen zu erzielen.
- BIT-libpython-2026-17084stringprep.map_table_b2() deviates from RFC 3454 Table B.22026-09-11vendor · osvUS
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.
- BIT-python-2026-17084stringprep.map_table_b2() deviates from RFC 3454 Table B.22026-09-11vendor · osvUS
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.
- BIT-python-min-2026-17084stringprep.map_table_b2() deviates from RFC 3454 Table B.22026-09-11vendor · osvUS
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.
- PSF-2026-372026-08-18vendor · osvUS
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.
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Referenzen (12) nvd
Externe Belege — Patches, Meldungen, Analysen.
- http://www.openwall.com/lists/oss-security/2026/08/18/2
- https://github.com/python/cpython/commit/1e54caa096678a38afcabecabb1ff72400dd6bae
- https://github.com/python/cpython/commit/5181304bcec9cfc3c15311741c9154cdff2e3fd7
- https://github.com/python/cpython/commit/69f92ebaec681e9149dfd70fd02d4ed52d2a6296
- https://github.com/python/cpython/commit/7e109d084d55e7eb25837a5f3b47ef9beee547bc
- https://github.com/python/cpython/commit/c016c2535b74227fddf2cf7334dbfead6c930214
- https://github.com/python/cpython/commit/c28b121a4f0b975937c8b5a1b4934bb361d84296
- https://github.com/python/cpython/commit/c42790b34f634051750e5da340d17c7da19e4784
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