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Fencer Vulns
medium 6.8

CVE-2026-85747 json

Distribution: Client `manifests.Get()` does not verify returned content against requested digest

published 2026-10-13 26 d ago modified 2026-11-05 3 d ago also BIT-distribution-2026-85747 , EUVD-2026-99225 , GHSA-685w-q87j-wqw3 , GO-2026-6778

cvss
6.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 12%
public exploits
0
none known

Summary

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.

Patch / fix

  • go github.com/distribution/distribution/v3 3.1.2
  • bitnami distribution 3.1.2
  • distribution distribution 3.1.2
  • distribution_project distribution 3.1.2

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-85747 updated cvss 6.8

github.com/distribution/distribution: distribution: Arbitrary container manifest substitution via missing digest verification

  • Red Hat OpenShift AI (RHOAI) rhoai/odh-data-science-pipelines-operator-controller-rhel9
    affected: no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
21 d ago

Exploit prediction

0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/distribution/distribution/security/advisories/GHSA-685w-q87j-wqw3 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 6.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
GitHub 3.1 6.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
OSV 3.1 6.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
go github.com/docker/distribution
<=2.8.3
all versions
 no fix listed
go github.com/distribution/distribution/v3
<3.1.2
3.1.2
bitnami distribution
<3.1.2
3.1.2
go github.com/distribution/distribution
all versions
 no fix listed

Affected products

  • distribution distribution

Classification

Weakness
  • CWE-354 Improper Validation of Integrity Check Value

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.