Description
oras-go is a Go library for managing OCI artifacts. Prior to 2.6.2, ensureLinkPath in content/file/utils.go:262-275 validates a hardlink target relative to the extract base but returns the unresolved target, causing os.Link("victim.secret", "<extract_base>/payload.tar.gz/evil_cwd_link") to resolve header.Linkname against the process current working directory for a Typeflag=TypeLink entry such as Name=payload.tar.gz/evil_cwd_link and Linkname="victim.secret" with io.deis.oras.content.unpack: "true", which can expose or tamper with files such as .env, .git/config, .aws/credentials, and ~/.ssh/config. This issue is fixed in version 2.6.2.
Published: 2026-07-17
Score: 7.1 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-fxhp-mv3v-67qp `oras-go` tar extraction: Hardlink entry with relative Linkname escapes extract dir via process CWD resolution
History

Fri, 17 Jul 2026 20:00:00 +0000

Type Values Removed Values Added
Description A flaw was found in oras-go, a Go library used for managing OCI (Open Container Initiative) artifacts. An attacker can exploit this vulnerability by providing a specially crafted tarball containing a malicious hardlink. When this tarball is extracted, the hardlink can be manipulated to point to files outside the intended extraction location, specifically within the victim's current working directory. This allows an attacker to read sensitive information from the system, and in some cases, could lead to unauthorized access to critical system files if the component is operating with elevated privileges. oras-go is a Go library for managing OCI artifacts. Prior to 2.6.2, ensureLinkPath in content/file/utils.go:262-275 validates a hardlink target relative to the extract base but returns the unresolved target, causing os.Link("victim.secret", "<extract_base>/payload.tar.gz/evil_cwd_link") to resolve header.Linkname against the process current working directory for a Typeflag=TypeLink entry such as Name=payload.tar.gz/evil_cwd_link and Linkname="victim.secret" with io.deis.oras.content.unpack: "true", which can expose or tamper with files such as .env, .git/config, .aws/credentials, and ~/.ssh/config. This issue is fixed in version 2.6.2.
Title oras-go: Oras-go: Information disclosure and arbitrary file access via crafted tarball hardlinks oras-go: Hardlink entry with relative Linkname escapes extract dir via process CWD resolution in `oras-go` tar extraction
Weaknesses CWE-59
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N'}

 cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N'}

Wed, 15 Jul 2026 00:15:00 +0000

Type Values Removed Values Added
Description A flaw was found in oras-go, a Go library used for managing OCI (Open Container Initiative) artifacts. An attacker can exploit this vulnerability by providing a specially crafted tarball containing a malicious hardlink. When this tarball is extracted, the hardlink can be manipulated to point to files outside the intended extraction location, specifically within the victim's current working directory. This allows an attacker to read sensitive information from the system, and in some cases, could lead to unauthorized access to critical system files if the component is operating with elevated privileges.
Title oras-go: Oras-go: Information disclosure and arbitrary file access via crafted tarball hardlinks
Weaknesses CWE-22
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N'}

threat_severity

Moderate

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-07-17T19:36:01.254Z

Reserved: 2026-06-03T20:54:20.432Z

Link: CVE-2026-50163

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-07-01T21:35:45Z

Links: CVE-2026-50163 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-07-17T03:45:04Z

Weaknesses