CVE-2026-7584: The LabOne Q serialization framework uses a class-loading mechanism (import_cls) to dynamically import and ins

Routine

HIGH 7.8UPGRADE

CVE-2026-7584 is a high-severity flaw (CVSS 7.8) affecting labone q. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The LabOne Q serialization framework uses a class-loading mechanism (import_cls) to dynamically import and instantiate Python classes during deserialization. Prior to the fix, this mechanism accepted arbitrary fully-qualified class names from the serialized data without any validation of the target class or restriction on which modules could be imported. An attacker can craft a serialized experiment file that causes the deserialization engine to

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 83%)
CISA exploited list	No
Weakness	CWE-502
Published	2026-05-01
Last modified	2026-10-26

Publisher (CNA): Switzerland Government Common Vulnerability Program · Vendor: zhinst

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-01 08:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

zhinst labone q UPGRADE

Affected: >= 2.41.0 and < 26.1.2 · 26.4.0 beta1 · 26.4.0 beta2 · 26.4.0 beta3 · 26.4.0 beta4 · 26.4.0 beta5

Fixed in: 26.1.2

Safe to downgrade to: a release before 2.41.0

1. Check installed version

apt-cache policy labone-q || rpm -q labone-q || labone-q --version

2. UPGRADE to 26.1.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade labone-q

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade labone-q

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2.41.0 (Debian / Ubuntu)

apt-cache madison labone-q sudo apt install labone-q=<VERSION_BEFORE_2.41.0> sudo apt-mark hold labone-q

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list labone-q sudo dnf downgrade labone-q-<VERSION_BEFORE_2.41.0> sudo dnf versionlock add labone-q

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-7584?

labone q: upgrade to 26.1.2. Exact commands for each OS are on this page.

Is CVE-2026-7584 being exploited?

CVE-2026-7584 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-7584 affect?

CVE-2026-7584 affects labone q. Severity is high (CVSS 7.8). The LabOne Q serialization framework uses a class-loading mechanism (import_cls) to dynamically import and instantiate Python classes during deserialization. Prior to the fix, this mechanism accepted arbitrary fully-qualified class names fr

How urgent is CVE-2026-7584?

Priority 32/100. High severity

Software pages

Python vulnerabilities

References

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