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.

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21801-1 advisory.

    - CVE-2026-24122: github.com/sigstore/cosign/v2/pkg/cosign: improper validation of certificates that     outlive expired CA       certificates (bsc#1258543).
    - CVE-2026-37236: github.com/grpc-ecosystem/grpc-gateway/v2/runtime: client can override the HTTP method     of a POST       request through the X-HTTP-Method-Override header and bypass established access control (bsc#1278002).
    - CVE-2026-41178: go.opentelemetry.io/otel/baggage, go.opentelemetry.io/otel/propagation: no rejection of     raw-length       headers in baggage parsing allows for DoS via oversized inputs (bsc#1276745).
    - CVE-2026-50163: oras-go: Information disclosure and arbitrary file access via crafted tarball hardlinks     (bsc#1278702).
    - CVE-2026-56854,CVE-2026-56855,CVE-2026-78662: golang.org/x/crypto/ssh: authentication bypass and     deadlocks in the       crypto/ssh library (bsc#1278624).
    - CVE-2026-84303: github.com/grpc/grpc-go: xDS RBAC HTTP filter implementation issue allows for bypass of     authorization       policies via mixed-case or canonical-case header matches (bsc#1279390).
    - CVE-2026-84304: github.com/grpc/grpc-go: heap memory exhaustion via HTTP/2 DATA frame fragmentation     (bsc#1279395).
    - CVE-2026-84445: google.golang.org/grpc: DoS via crash due to missing `:authority` and `Host` headers in     gRPC-Go xDS       servers (bsc#1279392).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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. (CVE-2026-50163)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2026-50163)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
344683	openSUSE 16 Security Update : trivy (openSUSE-SU-2026:21801-1)	Nessus	SuSE Local Security Checks	Local	high
445682	SCA: security update for oras.land/oras-go/v2 (GHSA-fxhp-mv3v-67qp)	Tenable Cloud Security	SCA Checks	Local	high
445682	SCA: security update for oras.land/oras-go/v2 (GHSA-fxhp-mv3v-67qp)	Tenable Self-Hosted Container Security	SCA Checks	Local	high
327772	Linux Distros Unpatched Vulnerability : CVE-2026-50163	Nessus	Misc.	Local	high

Detections

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CVE-2026-50163

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Tenable Plugins

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