CVE-2026-85469High· 8.0▾ Twilight

A flaw was found in quay-builder-qemu

A flaw was found in quay-builder-qemu. A remote attacker could exploit this by compromising the upstream `Noelware/docker-manifest-action` used in the release workflow, which is pinned to a mutable branch. This allows the attacker to inj…

▾ Twilight zone — High severity, or a signal on a lesser flaw

Depth score44/ 100 · Moderate

impact 44 · likelihood 0.1 · exploitation 0

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Proof of concept

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Published

Sep 16, 2026

Updated

Sep 18, 2026

CVSS

8.0

Vendor

Red Hat

Product

quay/quay-builder-qemu-rhcos-rhel8

CWE

CWE-1357

Depth score

44 · Moderate

EPSS

0.52% · p44

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

CISA SSVC

decided 2026-09-17

Exploitation: none
Automatable: no
Technical impact: total

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Sep 18.

0.5% → 0.5%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

4 events · 9 days

Sep 16, 2026Published
Disclosed via NVD
Sep 18, 2026Record revised
Last analysed / modified upstream
Sep 18, 2026EPSS first tracked
0.5%
Sep 25, 2026EPSS peak
0.5% → 0.5%

Red Hat CWE-1357 #nvd #cve.org #csaf #vex #red-hat

Affected

quay/quay-builder-qemu-rhcos-rhel8 (all versions)

Full technical detail▾

Overview

A flaw was found in quay-builder-qemu. A remote attacker could exploit this by compromising the upstream Noelware/docker-manifest-action used in the release workflow, which is pinned to a mutable branch. This allows the attacker to inject arbitrary code, leading to the exfiltration of sensitive registry credentials or the publication of malicious images. The workflow also exposes the default GitHub token, increasing the severity of the compromise.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

Vendor advisories

Red Hat VEX · Important · affected: Red Hat Quay 3 · no fix planned: Red Hat Quay 3 · updated 2026-09-16 · vex

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#cve.org#csaf#vex#red-hat

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