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Vulnerabilities

Vulnerability · CVE-2026-14966

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

Published Jul 8, 2026 · catalog updated Oct 14, 2026 · BBOT's Symlink guard bypass

Check if you run it

No confirmed exploitation is on record for CVE-2026-14966. EPSS is 0.38%. Act only if a listed version of BBOT's Symlink guard bypass is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (BBOT's Symlink guard bypass).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Low3.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.38%
Remediation
Version ranges on file
Affected products
PyPI bbot · pip bbot · pypi bbot

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • PyPI bbot2.3.1 → 3.0.0
  • pip bbot>= 2.3.1, < 3.0.0
  • pypi bbotversion unspecified

How to fix CVE-2026-14966

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-14966. EPSS is 0.38%. Act only if a listed version of BBOT's Symlink guard bypass is installed.

Which versions are affected?

Compare what you have installed with 2.3.1 → 3.0.0, >= 2.3.1, < 3.0.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-22: Path Traversal; CWE-59: Link Following. EPSS 0.38%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. 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

  2. Oct 14, 2026 · GitHub Advisory Database

    Fix available

    bbot fixed in 3.0.0

  3. Oct 14, 2026 · GitHub Advisory Database

    Fix available

    bbot fixed in 3.0.0

  4. 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

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

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

    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
  • OpenSSF OSV / OSV ScannerPackage advisoryGHSA-xpf3-p7gm-7756

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

    osv.dev
  • OpenSSF OSV / OSV ScannerPackage advisoryPYSEC-2026-3719
    osv.dev

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.