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Vulnerability record · CVE-2026-50163 · published 17 July 2026

CVE-2026-50163: Path traversal vulnerability

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.

7.1 CVSS 3.1 High EPSS 0.43% · top 65.4% CWE-22 · Path traversalCWE-59 · Link following Deferred
7.1CVSS 3.1 base score
0.43%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
23 Jul 2026Last modified by NVD

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.

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

References

LinkTags
https://github.com/oras-project/oras-go/commit/c463c654ab3ef34422c1764cd619806cebf20451
https://github.com/oras-project/oras-go/pull/1232
https://github.com/oras-project/oras-go/releases/tag/v2.6.2
https://github.com/oras-project/oras-go/security/advisories/GHSA-fxhp-mv3v-67qp
https://github.com/oras-project/oras-go/security/advisories/GHSA-fxhp-mv3v-67qp

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Source: NIST National Vulnerability Database (record CVE-2026-50163), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.