CVE catalog
CVE-2026-44722
DEBIAN-CVE-2026-44722
- Severity
- Unknown · CVSS 6.2
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.12% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | python-pyzipper | 13 | 0.3.6-5 | vulnerable |
| Debian | python-pyzipper | 13 | 0.4.0-1 | vulnerable |
| Debian | python-pyzipper | 14 | 0.3.6-5 | vulnerable |
| Debian | python-pyzipper | 14 | 0.4.0-1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | python-pyzipper | deb | 14 | 0.4.0-1 | Not reported | DEBIAN-CVE-2026-44722 | Not reported |
OpenFactory catalog packages
[Debian 13 (Trixie)]
- [python3-pyzipper]Affected
Source package: [python-pyzipper]
Details (2)
0.3.6-5· all · trixieAffected
pypi · python-pyzipper · debian · 13
0.3.6-5· all · trixieAffected
pypi · python-pyzipper · debian · 13
- [python-pyzipper-doc]Affected
Source package: [python-pyzipper]
Details (2)
0.3.6-5· all · trixieAffected
pypi · python-pyzipper · debian · 13
0.3.6-5· all · trixieAffected
pypi · python-pyzipper · debian · 13
Observed:
References
- [https://github.com/danifus/pyzipper/commit/93ce88e7dfd1635443197dab3fb8d477cff579ae]
- [https://github.com/danifus/pyzipper/releases/tag/v0.4.0]
- [https://github.com/danifus/pyzipper/security/advisories/GHSA-crqm-m339-7m2p]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-44722]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-44722]
[FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]