CVE-2026-32590Network attack vector

Authenticated code execution via pickle deserialization

Published Apr 8, 2026 · Updated Apr 8, 2026

Unsafe deserialization in Red Hat Quay and Mirror Registry allows remote authenticated users to execute code during resumable layer uploads. BlobUpload.sha_state and piece_sha_state store serialized hashlib state in the database, which the server later loads with Python pickle without ensuring that the stored bytes are trusted. Exploitation requires an authenticated web session and initiation of a container upload from a host, after which tampered state executes code in the Quay server context.

CVSS severity7.1
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Unsafe deserialization in Red Hat Quay and Mirror Registry allows remote authenticated users to execute code during resumable layer uploads. BlobUpload.sha_state and piece_sha_state store serialized hashlib state in the database, which the server later loads with Python pickle without ensuring that the stored bytes are trusted. Exploitation requires an authenticated web session and initiation of a container upload from a host, after which tampered state executes code in the Quay server context.

The record

CVE
CVE-2026-32590
Published
Apr 8, 2026
Updated
Apr 8, 2026
Vendor
389 Directory Server
Product
Red Hat Quay
Classifications
CWE-502, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

389 Directory Server · Red Hat QuayAffected versions are unavailable in this record.
389 Directory Server · Mirror Registry for Red Hat OpenShiftAffected versions are unavailable in this record.

Published CVSS scores

7.1Red Hat, Inc.CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo