Server-Side Request Forgery (SSRF) Affecting soci-snapshotter package, versions <0:0.16.0-1.amzn2023.0.1


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.21% (11th percentile)

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  • Snyk IDSNYK-AMZN2023-SOCISNAPSHOTTER-20849571
  • published13 Oct 2026
  • disclosed17 Jul 2026

Introduced: 17 Jul 2026

CVE-2026-48978  (opens in a new tab)
CWE-918  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 soci-snapshotter to version 0:0.16.0-1.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-3153.

NVD Description

Note: Versions mentioned in the description apply only to the upstream soci-snapshotter package and not the soci-snapshotter package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

oras-go is a Go library for managing OCI artifacts. Prior to 2.6.1, auth.Client follows the realm URL from a registry's WWW-Authenticate: Bearer challenge without validating the scheme or host, allowing a malicious or compromised registry to cause SSRF to internal networks such as http://169.254.169.254/, http://10.0.0.x/, and http://127.0.0.1/, or to downgrade a registry contacted over https:// to an http:// token endpoint in registry/remote/auth/client.go through Client.Do(), Client.fetchBearerToken(), fetchDistributionToken, and fetchOAuth2Token. This issue is fixed in version 2.6.1.

CVSS Base Scores

version 3.1