CVE-2026-50163
HIGHoras-go: Hardlink entry with relative Linkname escapes extract dir via process CWD resolution in `oras-go` tar extraction
Title source: cnaDescription
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.
References (4)
Core 4
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/oras-project/oras-go/security/advisories/GHSA-fxhp-mv3v-67qp
X_Refsource_Misc x_refsource_misc
https://github.com/oras-project/oras-go/pull/1232
X_Refsource_Misc x_refsource_misc
https://github.com/oras-project/oras-go/commit/c463c654ab3ef34422c1764cd619806cebf20451
X_Refsource_Misc x_refsource_misc
https://github.com/oras-project/oras-go/releases/tag/v2.6.2
Scores
CVSS v3
7.1
EPSS
0.0034
EPSS Percentile
27.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-22
CWE-59
Status
published
Products (1)
oras-project/oras-go
< 2.6.2
Published
Jul 17, 2026
Tracked Since
Jul 18, 2026