---
id: CVE-2026-14966
aliases:
  - PYSEC-2026-3719
title: >-
  BBOT's unarchive module rejects archives containing symlink entries before
  extraction, but for zip and 7z archives it failed to detect sy…
summary: >-
  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 vers…
severity: low
cvss: 3.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N'
vendor: bbot
product: bbot
ecosystem: pip
affected:
  - 'bbot >= 2.3.1, < 3.0.0'
patched:
  - bbot 3.0.0
published: '2026-07-08'
updated: '2026-08-20'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/PYSEC-2026-3719'
references:
  - url: >-
      https://github.com/blacklanternsecurity/bbot/commit/a3f1a2292e2b0a553827c6175b761abe28807735
tags:
  - osv
  - pip
epss: 0.00384
epssPercentile: 0.29587
ingestedAt: '2026-08-20T19:23:08.392Z'
---

## Overview

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.

## Affected packages

- `bbot >= 2.3.1, < 3.0.0`

## Remediation

Upgrade to a patched release:

- `bbot 3.0.0`