9.3

CVE-2024-33663: python-jose_project python-jose

Deferred
AliasesopenSUSE-SU-2024:0118-1GHSA-3qf3-8w2g-rqmxCVE-2026-85394
Published 25-04-2024Last modified 03-09-2024

Vulnerability summary

CVE-2024-33663 is a critical (CVSS 9.3) vulnerability in python-jose_project python-jose. EPSS estimates a 0.31% chance of exploitation in the next 30 days, higher than 23.6% of scored vulnerabilities. 2 public exploits are recorded.

Priority
Routine

Not severe (CVSS 6.5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
9.3/10
010
Critical · v4.0 (NVD)
EPSS score
0.31%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits2github, reference

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2024:13928-1RHSA-2024:6428CGA-8JXW-RMGP-5527

Timeline

  1. 25-04-2024
    PublishedVulnerability first disclosed.
  2. 03-09-2024
    Last modifiedVulnerability information updated.

Description

python-jose through 3.5.0 fails to properly validate asymmetric keys in HMAC initialization, accepting DER-encoded public keys that lack PEM armor or SSH prefixes. Attackers holding the service's public key can forge HS256 tokens that pass verification when algorithms are not explicitly restricted. This is an incomplete fix for CVE-2024-33663.

CVSS metrics

9 scores · 6 sources · 2 versions

EPSS trend

Probability

0.31%

Chance of exploitation in the next 30 days

Percentile

24%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.31% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

2 found
  • githubUnverified

    Python Jose

    Maturity: poc

  • referenceUnverified

    Exploit Reference (vicarius.io)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard1 product
  • awxAll versions (No fix recorded)
Debian1 product
  • python-joseAll versions (No fix recorded)
Opensuse1 product
  • python-python-jose&distro=openSUSE Leap 15.5< 3.0.1-bp155.3.3.1
PyPI1 product
  • python-jose≤ 3.5.0 | < 3.4.0
Python-jose_project1 product
Suse1 product
  • python-python-jose&distro=SUSE Package Hub 15 SP5< 3.0.1-bp155.3.3.1
Ubuntu1 product
  • python-joseAll versions (No fix recorded)

7 vendors · 7 products

References

22 links
Show all 22 references