Vulnerability · Published Sep 16, 2026 · Assigned by GitHub_M
CVE-2026-85732oras-go: Blind SSRF via unvalidated Link header URL in pagination allows internal network probing
Medium 4.7
In plain English
A medium-severity server-side request forgery in oras-go from oras-project. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | golang-oras-oras-go | no fix listed | DEBIAN-CVE-2026-85732 |
| Debian:13 | golang-oras-oras-go | no fix listed | DEBIAN-CVE-2026-85732 |
| Debian:14 | golang-oras-oras-go | 2.6.2-1 | DEBIAN-CVE-2026-85732 |
| Go | oras.land/oras-go/v2 | 2.6.2 | GO-2026-6497 |
| Go | oras.land/oras-go/v2 | 2.6.2 | GHSA-h7vf-4x9w-h99v |
| Ubuntu:24.04:LTS | golang-oras-oras-go | no fix listed | UBUNTU-CVE-2026-85732 |
| Ubuntu:26.04:LTS | golang-oras-oras-go | no fix listed | UBUNTU-CVE-2026-85732 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| oras-project | oras-go | < 2.6.2 |
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N