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CVE-2026-44722
MEDIUM(6.2)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Risk Signal Score26/100 — MITTEL
- CVSS 6.2 — Mittel
- Weniger als 24 Stunden alt
Beschreibung
pyzipper is a replacement for Python's zipfile that can read and write AES encrypted zip files. Prior to 0.4.0, a Python operator precedence bug in pyzipper/zipfile_aes.py caused the AE-2 format to never be automatically selected during encryption, causing encrypted entries to be written in AE-1 format and exposing the plaintext CRC32 checksum in the ZIP header and, for unseekable zip archives, in the datadescripter section, allowing an attacker who possesses the archive to brute-force candidate plaintexts for small or low-entropy files by comparing CRC32 values. This issue is fixed in version 0.4.0.
GitHub Advisories
GHSA-crqm-m339-7m2pMEDIUM
pyzipper has an encryption bypass for small files encrypted using it
pip/pyzipper→ 0.4.0
GitHub Advisory