CVE-2026-50163
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.35%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- 7.1 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
- EPSS
- 0.35% probability · 28th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-22, CWE-59
- Source
- security-advisories@github.com
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.