CVE-2026-79705

4.5 MEDIUM 0.4% exploit odds No fix listed Disclosure Library

What it is

A flaw was found in the buildah/copier Go package. When used outside of Buildah by a non-root caller, a crafted tar archive containing malicious symlinks can escape the target extraction directory and create files outside the intended destination. Buildah itself uses chroot hardening and is not affected.

At a glance

Exploitability: Can be exploited over the network with an admin-level account, but needs a user to act. High risk of data tampering.
Exploit odds: 0.4% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2026-09-15 17:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-11-06 01:17 UTC Last updatedMost recent change to the record

Details

Published: 2026-09-15 17:17 UTC
Last modified: 2026-11-06 01:17 UTC
Exploit probability: 0.4% · EPSS, next 30 days
Weakness: CWE-22 · Path traversal
Record status: Awaiting Analysis

Attack profile CVSS 3.1 · 4.5

Attack vector: Network
Complexity: Low
Privileges needed: High
User interaction: Required
Scope: Unchanged
Confidentiality: None
Integrity: High
Availability: None

Raw vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N

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References

NVD record · CVE.org record