CVE-2024-21503

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.97% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 61.7% of scored records. A rank, not a probability.

NVD base score

5.3 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Deferred. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2024-03-19 05:00Z2 YR AGO

Last updated

2024-08-01 22:20Z2 YR AGO

Reserved

2023-12-22

Assigning CNA

snyk

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

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

Weaknesses

• CWE-75Failure to Sanitize Special Elements into a Different Plane (Special Element Injection)Class
• CWE-1333Inefficient Regular Expression ComplexityBase

Data version

5.1

Document digest

5f7eb2dc0565e9f9c5ce8861b19c7ca27ab9a0f9a95c8030c7965bef787dcfb8

• security.snyk.iohttps://security.snyk.io/vuln/SNYK-PYTHON-BLACK-6256273
• github.comhttps://github.com/psf/black/releases/tag/24.3.0
• github.comhttps://github.com/psf/black/commit/f00093672628d212b8965a8993cee8bedf5fe9b8