CVE-2024-21503CWE-1333

Versions of the package black before 24.3.0 are vulnerable to Regular Expression Denial of Service (ReDoS) via the lines_with_leading_tabs_expanded function in…

Medium · published March 19, 2024

CVSS v3.1
5.3
EPSS
1%
Percentile
61.8
In the wild
Unconfirmed
What it is

Versions of the package black before 24.3.0 are vulnerable to Regular Expression Denial of Service (ReDoS) via the lines_with_leading_tabs_expanded function in the strings.py file. An attacker could exploit this vulnerability by crafting a malicious input that causes a denial of service. Exploiting this vulnerability is possible when running Black on untrusted input, or if you habitually put thousands of leading tab characters in your docstrings.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P
CVSS v4.0
Not supplied
EPSS
0.00979 · 61.8th percentile
Weakness
CWE-1333 · Inefficient Regular Expression Complexity
Published
2024-03-19T05:00Z
EPSS history
Timeline
  • 19 MAR 05:00Z
    Versions of the package black before 24.3.0 are vulnerable to Regular Expression Denial of Service (ReDoS) via the lines_with_leading_tabs_expanded function in…
    cvelistv5