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[ CVE-2026-14966 · Published 8 Jul 2026 ]

BBOT's Symlink guard bypass in unarchive module allows planting symlinks during extraction

CVSS 3.1 EPSS <1%Fix available

[ Description ]Official description

BBOT's unarchive module rejects archives containing symlink entries before extraction, but for zip and 7z archives it failed to detect symlinks whose listing carries a DOS-attribute prefix before the unix mode, as produced by legacy versions of p7zip. Such an archive, downloaded and extracted during a scan (for example via filedownload), bypassed the guard and caused an attacker-controlled symlink to be written into the extraction directory. The effect is limited to planting the symlink (its target is not written through), and only hosts using such a legacy p7zip build are affected; current mainline 7-Zip is not.

[ Fixes ]Fixes and patches

  • bbot 3.0.0Fixed version · GitHub Advisories · pip package bbot: upgrade to 3.0.0 or later (affected >= 2.3.1, < 3.0.0)

[ Packages ]Affected open-source packages

[ References ]References