py7zr: py7zr is a Python-based library and utility to support 7zip archive compression, decompression, encryption and decryp...
CVE-2026-23879 is fixed in 2 products on 1 platform, first by OPENSUSE-SU-2026:21159-1, released June 25, 2026. It is not reported as exploited. Patch Radar priority: High.
py7zr is a Python-based library and utility to support 7zip archive compression, decompression, encryption and decryption. Versions 1.1.2 and below contain an an arbitrary file write vulnerability, which allows symbolic links to be recreated outside the destination directory via crafted malicious symbolic link chains. When using extractall to extract an archive, the library restores these symbolic links, linking them to arbitrary directories on the host file system. During extraction, the program only checks the link arcname within the destination directory, but ignores the combined symlink path resolution. Attackers can exploit this vulnerability by constructing malicious archives, thereby bypassing the directory boundary restrictions implemented by the extractor. Subsequent extraction of regular files through these symbolic links can result in arbitrary file writes. This vulnerability may lead to remote code execution, privilege escalation, data corruption, or denial of service. This issue has been fixed in version 1.1.3.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| py7zr · Debian 14 | 1.1.2+dfsg-1 | DEBIAN-CVE-2026-23879 | Jun 26, 2026 |
| python-py7zr · opensuse-leap 16.0 | 1.0.0-bp160.2.1 | OPENSUSE-SU-2026:21159-1 | Jun 25, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.