Is there a public exploit for CVE-2026-105668?

No public exploit for CVE-2026-105668 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-105668?

CVE-2026-105668 scores CVSS 7.1 (v4.0), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.36%.

What does CVE-2026-105668 affect?

CVE-2026-105668 affects hexpm hex.

7.1 High

Protection Mechanism Failure vulnerability in hexpm hex allows the owner of a package, or an attacker who has taken over the owner's…

CVE-2026-105668

Protection Mechanism Failure vulnerability in hexpm hex allows the owner of a package, or an attacker who has taken over the owner's account, to get a newly published release past the release-age cooldown. The cooldown (cooldown config, HEXCOOLDOWN) withholds versions younger than the configured age during dependency resolution. When the release of a package locked in mix.lock is retired or has a security advisory, Hex.RemoteConverger.buildcooldownbypass/3 and Hex.RemoteConverger.unsafelockbypass/1 lift the cooldown for every version of that package and of every package the locked release depends on, so that mix deps.update can move off the unsafe release. Retiring a release needs the same package owner permission as publishing one. An attacker who publishes a malicious release can retire the currently locked release, and the next mix deps.update that unlocks the package selects the new release regardless of its age. Hex.Registry.Cooldown.versions/2 checks the bypass by package name alone, so the bypass also covers packages with the same name in other repositories. Cooldown configured through an organization dependency policy is not affected. This issue affects hex: from 2.5.0…

Assessment

CVSS: 7.1 (v4.0)
Severity: High
EPSS: 0.36% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 12 October 2026
Last updated: 11 November 2026
Affected: hexpm · hex
Assigner: EEF

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

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