CVE-2026-14966
BBOT's Symlink guard bypass in unarchive module allows planting symlinks during extraction
Published Jul 8, 2026 · updated Oct 14, 2026
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.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Oct 14, 2026 · GitHub Advisory Database
Detected
BBOT's 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 ), bypassed the guard and caused an attacker-controlled symlink to be written into th
Oct 14, 2026 · GitHub Advisory Database
Fix available
bbot fixed in 3.0.0
Oct 14, 2026 · GitHub Advisory Database
Fix available
bbot fixed in 3.0.0
Oct 14, 2026 · GitHub Advisory Database
Updated
BBOT's 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 ), bypassed the guard and caused an attacker-controlled symlink to be written into th
Affected
- PyPI bbot2.3.1 → 3.0.0
- pypi bbotversion unspecified
Sources
- CVE.orgVulnerability recordCVE-2026-14966
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-14966
30-day exploitation probability 0.4%
first.org - GitHub Advisory DatabasePackage advisoryGHSA-xpf3-p7gm-7756
GitHub Advisory Database record mirrored by OSV.
github.com - GitLab Advisory DatabasePackage advisoryCVE-2026-14966
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
advisories.gitlab.com - OSV.devPackage advisoryGHSA-xpf3-p7gm-7756
BBOT's Symlink guard bypass in unarchive module allows planting symlinks during extraction
osv.dev - OSV.devPackage advisoryPYSEC-2026-3719osv.dev