Vulnerability · Published Oct 13, 2026 · Assigned by GitHub_M
CVE-2026-85747Distribution: Client `manifests.Get()` does not verify returned content against requested digest
Medium 6.8
In plain English
A medium-severity security flaw in distribution from distribution. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Distribution is a toolkit to pack, ship, store, and deliver container content. Prior to 3.1.2, registry/client.(*manifests).Get() reads a manifest returned for a digest-pinned request and passes it to distribution.UnmarshalManifest without hashing the body against the requested digest, allowing a malicious or intercepted registry response to substitute attacker-chosen manifest content even when Docker-Content-Digest claims the requested value. The bundled pull-through proxy in registry/proxy/proxymanifeststore.go can cache and re-serve the substituted manifest. This issue is fixed in version 3.1.2.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | docker-registry | no fix listed | DEBIAN-CVE-2026-85747 |
| Debian:13 | docker-registry | no fix listed | DEBIAN-CVE-2026-85747 |
| Debian:14 | docker-registry | no fix listed | DEBIAN-CVE-2026-85747 |
| Go | github.com/distribution/distribution | no fix listed | GO-2026-6778 |
| Go | github.com/distribution/distribution/v3 | 3.1.2 | GO-2026-6778 |
| Go | github.com/distribution/distribution/v3 | 3.1.2 | GHSA-685w-q87j-wqw3 |
| Go | github.com/docker/distribution | no fix listed | GO-2026-6778 |
| Go | github.com/docker/distribution | no fix listed | GHSA-685w-q87j-wqw3 |
| Ubuntu:24.04:LTS | docker-registry | no fix listed | UBUNTU-CVE-2026-85747 |
| Ubuntu:26.10 | docker-registry | no fix listed | UBUNTU-CVE-2026-85747 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| distribution | distribution | < 3.1.2 |
Weakness: CWE-354 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N