VULNERABILITY INTELLIGENCE
CVE-2026-55195
EPSS probability0.32%
CISA KEVNot currently listed
Published2026-07-08
Last modified2026-10-25
Description
py7zr is a Python-based library and utility to support 7zip archive compression, decompression, encryption and decryption. Prior to 1.1.3, py7zr's Worker.decompress() extracted archive entries without tracking total decompressed size, allowing a crafted .7z file such as a 15.6 KB archive that expands to 100 MB to exhaust disk or memory before extraction completes. This issue is fixed in version 1.1.3.
Weakness classification
- security-advisories@github.com: CWE-409