CVE-2026-32590 Mirror-registry: remote code execution using pickle deserialization
An attacker can execute arbitrary code on the Red Hat Quay server by tampering with intermediate data during resumable container image layer uploads.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-32590?
CVE-2026-32590 is a high-severity unsafe deserialization vulnerability in Red Hat Quay 3.10, published on 8 Apr 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
A flaw was found in Red Hat Quay's handling of resumable container image layer uploads. The upload process stores intermediate data in the database using a format that, if tampered with, could allow an attacker to execute arbitrary code on the Quay server.
Weakness: CWE-502
Which versions are affected by CVE-2026-32590?
It affects 2 products.
Products include Redhat Mirror Registry for Red Hat Openshift, Redhat Quay.
How do I fix CVE-2026-32590?
No fix has been published for CVE-2026-32590 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-32590 being exploited?
There is no known exploitation of CVE-2026-32590 in the wild and no public exploit code.
Other vulnerabilities in Red Hat Quay 3.10
- CVE-2026-32589 Mirror-registry: quay: insecure direct object reference in blobupload
- CVE-2026-2377 Mirror-registry: quay: quay: server-side request forgery via log export functionality
- CVE-2025-14243 Mirror-registry: openshift mirror registry: user enumeration via authentication error messages
- CVE-2026-32591 Mirror-registry: quay: server-side request forgery in proxy cache upstream registry configuration
Sources
Also known as GHSA-mvqc-wfv6-7764.