Threats Tagged 'cve-2026-23879'
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Threats Tagged 'cve-2026-23879'
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CVE-2026-23879: CWE-59: Improper Link Resolution Before File Access ('Link Following') in miurahr py7zrCVE-2026-23879 0 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. Join the discussion | CVE Database V5 | 06/24/2026, 19:17:28 UTC Added: 06/24/2026, 19:56:53 UTC |
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