VulnerabilityPublished 15 Sep 2026Updated 30 Oct 2026

CVE-2026-79705: Red Hat Hardened Images copier · Path Traversal

Affects Red Hat Hardened Images copierSource CVE Database V5

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Not known to be exploited · CVSS 4.5 Medium.

Data as of 30 Oct 2026, 20:38 UTC

CVSS 3.1 base score

4.5Medium

How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none

CVSS scores by source
CNA (redhat)	CVSS 3.1	4.5

EPSS: 0.4% chance of exploitation in 30 days – higher than 35% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: High
User Interaction: Required
Scope: Unchanged
Confidentiality: None
Integrity: High
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: High: The attacker is authorized with (i.e., requires) privileges that provide significant (e.g., administrative) control over the vulnerable component that could affect component-wide settings and files.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 15 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Gogithub.com/containers/buildah/copier`pkg:golang/github.com/containers/buildah/copier`Other threats	Affected *	Fixed in–

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AI-suggested

Red Hat advises users to only perform 'podman cp' operations against trusted Podman system service servers to mitigate this vulnerability. Copying content from untrusted sources may expose clients to directory traversal risks. A security update addressing this vulnerability is available in Red Hat Hardened Images RPMs, including podman version 6.1.3-1.hum1 and related packages. Users should apply this update to remediate the issue.

Description

CVE-2026-79705 is a path traversal vulnerability in the buildah/copier Go package used by Red Hat Hardened Images. When used outside of Buildah by a non-root user, a crafted tar archive with malicious symlinks can escape the intended extraction directory and create files elsewhere on the filesystem. Buildah itself is not affected due to chroot hardening. The vulnerability can be exploited when a macOS Podman remote client performs 'podman cp' against a malicious Podman system service server, requiring user interaction and a malicious server. Red Hat advises only performing 'podman cp' operations against trusted servers. A security update addressing this issue is available in Red Hat Hardened Images RPMs.

Impact

The vulnerability allows an attacker to perform directory traversal via crafted tar symlinks, enabling creation of files outside the intended extraction directory. This impacts integrity by allowing unauthorized file creation or modification. Confidentiality and availability are not affected. Exploitation requires high privileges (non-root user) and user interaction, and involves interaction with a malicious Podman system service server. Typical container deployments on Red Hat Enterprise Linux are not affected.

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What to do

Affected software

Description

AI analysisMachine-generated, updated 30 Oct 2026, 12:08 UTC

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