Hi,

The following vulnerability was published for python-pyzipper.

CVE-2026-44722[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-44722
https://www.cve.org/CVERecord?id=CVE-2026-44722
[1] https://github.com/danifus/pyzipper/security/advisories/GHSA-crqm-m339-7m2p
[2] https://github.com/danifus/pyzipper/commit/93ce88e7dfd1635443197dab3fb8d477cff579ae

Regards,
Salvatore