CVE-2024-34997: joblib v1.4.2 was discovered to contain a deserialization vulnerability via the component joblib.numpy_pickle:

Q: How do I fix CVE-2024-34997?

joblib: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2024-34997 being exploited?

CVE-2024-34997 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-34997 affect?

CVE-2024-34997 affects joblib. Severity is high (CVSS 7.5). joblib v1.4.2 was discovered to contain a deserialization vulnerability via the component joblib.numpy_pickle::NumpyArrayWrapper().read_array(). NOTE: this is disputed by the supplier because NumpyArrayWrapper is only used during caching of

Q: How urgent is CVE-2024-34997?

Priority 44/100. High severity; Public exploit reference

This month

HIGH 7.5DOWNGRADE

CVE-2024-34997 is a high-severity flaw (CVSS 7.5) affecting joblib. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

joblib v1.4.2 was discovered to contain a deserialization vulnerability via the component joblib.numpy_pickle::NumpyArrayWrapper().read_array(). NOTE: this is disputed by the supplier because NumpyArrayWrapper is only used during caching of trusted content.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.7% (top 48%)
CISA exploited list	No
Weakness	CWE-502
Published	2024-05-17
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: joblib project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-05-17 19:15 UTCPublished CVE record published
2026-06-17 07:34 UTCUpdated Record last modified

joblib project joblib DOWNGRADE

Affected: 1.4.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.4.2

1. Check installed version

pip show joblib

2. No fixed release: DOWNGRADE to a release before 1.4.2

pip index versions joblib pip install "joblib<1.4.2"

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-2024-34997?

joblib: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-34997 being exploited?

CVE-2024-34997 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-2024-34997 affect?

CVE-2024-34997 affects joblib. Severity is high (CVSS 7.5). joblib v1.4.2 was discovered to contain a deserialization vulnerability via the component joblib.numpy_pickle::NumpyArrayWrapper().read_array(). NOTE: this is disputed by the supplier because NumpyArrayWrapper is only used during caching of

How urgent is CVE-2024-34997?

Priority 44/100. High severity; Public exploit reference

Software pages

Pandas and NumPy vulnerabilities

References

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