CVE-2026-14966: BBOT's unarchive module rejects archives containing symlink entries before extraction, but for zip and 7z arch

Routine

LOW 3.1UPGRADE

CVE-2026-14966 is a low-severity flaw (CVSS 3.1) affecting bbot. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	3.1 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 68%)
CISA exploited list	No
Weakness	CWE-59
Published	2026-07-08
Last modified	2026-10-25

Publisher (CNA): Black Lantern Security · Vendor: blacklanternsecurity

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-08 16:16 UTCPublished CVE record published
2026-10-25 20:10 UTCUpdated Record last modified

blacklanternsecurity bbot UPGRADE

Affected: >= 2.3.1 and <= 2.8.6 · 3.0.0.0 rc · 3.0.0.647 rc · 3.0.0.649 rc · 3.0.0.652 rc · 3.0.0.654 rc · 3.0.0.659 rc · 3.0.0.669 rc

Fixed in: newer than 2.8.6

Safe to downgrade to: a release before 2.3.1

1. Check installed version

apt-cache policy bbot || rpm -q bbot || bbot --version

2. UPGRADE to newer than 2.8.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade bbot

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade bbot

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2.3.1 (Debian / Ubuntu)

apt-cache madison bbot sudo apt install bbot=<VERSION_BEFORE_2.3.1> sudo apt-mark hold bbot

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list bbot sudo dnf downgrade bbot-<VERSION_BEFORE_2.3.1> sudo dnf versionlock add bbot

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-14966?

bbot: upgrade to newer than 2.8.6. Exact commands for each OS are on this page.

Is CVE-2026-14966 being exploited?

CVE-2026-14966 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-14966 affect?

CVE-2026-14966 affects bbot. Severity is low (CVSS 3.1). 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 version

How urgent is CVE-2026-14966?

Priority 19/100. No elevated risk signals yet.

Related CVEs

CVE-2026-14967 LOW 3.1 UPGRADE BBOT's `github_workflows` module could be induced to write a downloaded artifact outside its configured output

References

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