CVE-2024-33664

Name: CVE-2024-33664
Creator: NVD / NIST
Published: 2024-04-26T00:15:09.06+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.78%

Last modified Jun 17, 2026

CVE-2024-33664 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. python-jose through 3.3.0 allows attackers to cause a denial of service (resource consumption) during a decode via a crafted JSON Web Encryption (JWE) token with a high compression ratio, aka a "JWT bomb." This is similar to CVE-2024-21319.. EPSS estimates a 0.78% chance of exploitation in the next 30 days.

Description

python-jose through 3.3.0 allows attackers to cause a denial of service (resource consumption) during a decode via a crafted JSON Web Encryption (JWE) token with a high compression ratio, aka a "JWT bomb." This is similar to CVE-2024-21319.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.78%

51.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-400

Affected Software

Vendor	Product	Versions
Python-Jose Project	Python-Jose	<= 3.3.0

References

https://github.com/mpdavis/python-jose/issues/344Exploit, Issue Tracking, Mitigation, Vendor Advisory
https://github.com/mpdavis/python-jose/pull/345Issue Tracking, Patch
https://www.vicarius.io/vsociety/posts/jwt-bomb-in-python-jose-cve-2024-33664Exploit, Mitigation, Third Party Advisory
https://github.com/mpdavis/python-jose/issues/344Exploit, Issue Tracking, Mitigation, Vendor Advisory
https://github.com/mpdavis/python-jose/pull/345Issue Tracking, Patch
https://www.vicarius.io/vsociety/posts/jwt-bomb-in-python-jose-cve-2024-33664Exploit, Mitigation, Third Party Advisory

Timeline

Published: Apr 26, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-33664?

How severe is CVE-2024-33664?

CVE-2024-33664 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.78% probability of exploitation in the next 30 days.

How do I fix CVE-2024-33664?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-33664?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST