🛡️ CVE-2024-33664 — python-jose

🟡 CVSS 5.3 — Medium ⚠️ Exploit Public CWE-400 OSV

5.3

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

python-jose denial of service via compressed JWE content

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability low.

Weakness class

CVE-2024-33664 is classified as CWE-400: Uncontrolled Resource Consumption. A request can consume memory, CPU or storage without limit, exhausting capacity for everyone else.

Affected software

CVE-2024-33664 is recorded against 1 package.

python-jose (fixed in 3.4.0)

Timeline and source

Published on 26 April 2024 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. A vendor advisory or fix has been published. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Package)
github.com (Web)
github.com (Web)
www.vicarius.io (Web)

CVE-2024-33664 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Debian Ubuntu

Details

Severity MEDIUM

CVSS Score 5.3

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

CWE CWE-400

Public Exploit ⚠️ Yes

Source OSV

Published 2024-04-26

Updated 2026-08-12

Modified 2026-06-17

Fix URL https://github.com/mpdavis/python-jose/pull/345

Affected Packages

Software	From version	Fixed in
python-jose	—	3.4.0

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2024-33664

WEB https://github.com/mpdavis/python-jose/issues/344

WEB https://github.com/mpdavis/python-jose/pull/345

PACKAGE https://github.com/mpdavis/python-jose

WEB https://github.com/mpdavis/python-jose/releases/tag/3.4.0

WEB https://github.com/pypa/advisory-database/tree/main/vulns/python-jose/PYSEC-2024-233.yaml

WEB https://www.vicarius.io/vsociety/posts/jwt-bomb-in-python-jose-cve-2024-33664

🔗 NVD 🔗 Mitre ✅ Fix / Advisory

Similar Threats

Exploit Protection

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