Bug 2535554 (CVE-2026-85732) - CVE-2026-85732 github.com/oras-project/oras-go: oras-go: Blind Server-Side Request Forgery via unvalidated Link header URL
Summary: CVE-2026-85732 github.com/oras-project/oras-go: oras-go: Blind Server-Side Re...
Keywords:
Status: NEW
Alias: CVE-2026-85732
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2535578
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-16 16:44 UTC by OSIDB Bzimport
Modified: 2026-09-16 17:49 UTC (History)
0 users

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Description OSIDB Bzimport 2026-09-16 16:44:48 UTC
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.


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