CVE-2026-85732 oras-go: Blind SSRF via unvalidated Link header URL in pagination allows internal network probing
An attacker can force the library to make requests to internal services via a malicious registry, enabling network probing and potential credential leakage.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-85732?
CVE-2026-85732 is a medium-severity server-side request forgery vulnerability in oras-project oras-go, published on 16 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-918
Which versions are affected by CVE-2026-85732?
3 open source packages ship an affected version, including oras.land/oras-go/v2.
| Package | Affected | Fixed in |
|---|---|---|
oras.land/oras-go/v2 Go | All versions | 2.6.2 |
oras.land/oras-go/v2 Go | All versions | 2.6.2 |
oras.land/oras-go/v2 Go | All versions | 2.6.2 |
Linux distribution packages (1)
helm openSUSE:Tumbleweed | All versions | 4.3.0-2.1 |
How do I fix CVE-2026-85732?
Upgrade oras.land/oras-go/v2 to 2.6.2 or later.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-85732 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-85732 exists.
Sources
Also known as CLEANSTART-2026-FH01204, CLEANSTART-2026-RO55124, CLEANSTART-2026-VP35771, DEBIAN-CVE-2026-85732, ECHO-907e-3d79-47e5, GHSA-h7vf-4x9w-h99v and 184 more.