This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-55195 →

DEBIAN-CVE-2026-55195

py7zr is a Python-based library and utility to support 7zip archive compression, decompression, encryption and decryption. Prior to 1.1.3, py7zr's Wor...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 py7zr

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 py7zr

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 py7zr

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.3+dfsg-1"}]}]

References

advisory security-tracker.debian.org