CVE-2026-85732: ORAS-Go blind SSRF via unvalidated Link header in pagination

CVE-2026-85732 · Severity: medium · CVSS 4.7 · Published 2026-09-16

ORAS-Go is a Go library for interacting with OCI registries (container image repositories). The library's pagination handler accepts arbitrary URLs from HTTP Link headers without validation, allowing a malicious registry to redirect clients to internal network endpoints. An attacker can probe internal services, cloud metadata endpoints, or trigger side effects on services inside the victim's network.

Technologies: oras.land/oras-go/v2 (Go), ORAS Project Oras-Go. Vendors: Go, ORAS Project.

Quick answers

Is CVE-2026-85732 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-85732 being exploited in the wild.
How severe is CVE-2026-85732?
Medium severity, with a CVSS score of 4.7, published 16 September 2026.
Which products and versions are affected?
oras.land/oras-go/v2 (Go) <= 2.6.1, SEMVER:introduced=0,fixed=2.6.2; ORAS Project Oras-Go <unknown.
Is there a fix for CVE-2026-85732?
Yes. oras.land/oras-go/v2 (Go): upgrade to 2.6.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-85732 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-85732?
Check whether you run oras.land/oras-go/v2 (Go) or ORAS Project Oras-Go at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • oras.land/oras-go/v2 (Go): upgrade to 2.6.2 or later
    go get oras.land/oras-go/v2@v2.6.2

Technical details

The vulnerability is a blind Server-Side Request Forgery (SSRF) in the `parseLink()` function in registry/remote/utils.go. This function parses the HTTP Link header for pagination without validating the URL's host or scheme, allowing absolute URLs pointing to arbitrary hosts. During pagination of Tags, Referrers, or Repositories operations, the client automatically makes GET requests to attacker-controlled URLs within the victim's network context. No preconditions exist beyond calling a pagination-based listing operation against a malicious or compromised registry; the client requires no special configuration. An attacker gains the ability to conduct blind SSRF attacks from the victim's network, potentially accessing cloud metadata endpoints, internal services, or triggering service-side effects. The fix requires host and scheme validation in parseLink() before subsequent HTTP requests are issued.

Affected products

  • ORAS Project ORAS-Go <unknown

Identifiers

  • CVE-2026-85732
  • GHSA-h7vf-4x9w-h99v
  • GO-2026-6497

Timeline

  • 2026-09-17: disclosed

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