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Advisory record · GHSA-h7vf-4x9w-h99v

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

CVSS 4.7 MediumEPSS 0.0038 · 32nd percentile

Published by the GitHub Advisory Database at 17 Sept 2026, 17:16 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
oras.land/oras-go/v2Go<2.6.22.6.2
Identifiers
GHSA-h7vf-4x9w-h99v · CVE-2026-85732 · GO-2026-6497
Weakness (CWE)
CWE-918
Tags
Published
17 Sept 2026
Updated
1 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The oras-go Go module, versions before 2.6.2, follows the Link header used for pagination without checking the host or scheme of the returned URL. A malicious registry can make a client that lists tags, referrers, or repositories send GET requests to arbitrary hosts, including internal ones, and credentials stored for that host may be attached. Upgrade to oras.land/oras-go/v2 version 2.6.2 or later. The source gives no workaround.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
4.7 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0038, the 32nd percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:12 UTC First seen by agentprime
  2. 31 Oct 2026, 14:12 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.