GitHub Advisoryadvisory · PyPI

GHSA-g3rq-g295-4j3m Regular Expression Denial of Service (ReDoS) in Jinja2

MEDIUM Published 2021-03-19 Modified 2024-09-24 Official page ↗
Aliases
CVE-2020-28493
Ecosystem
PyPI
Packages
Jinja2
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
CWE-400
Reviewed
2021-03-13

Affected packages

• PyPI Jinja2: < 2.11.3 → fixed in 2.11.3

Description

This affects the package jinja2 from 0.0.0 and before 2.11.3. The ReDOS vulnerability of the regex is mainly due to the sub-pattern [a-zA-Z0-9._-]+.[a-zA-Z0-9._-]+ This issue can be mitigated by Markdown to format user content instead of the urlize filter, or by implementing request timeouts and limiting process memory.

Related

Alias · CVE (1)

  • CVE-2020-28493 This affects the package jinja2 from 0.0.0 and before 2.11.3. vulnerability

Weakness · CWE (1)

  • CWE-400 Uncontrolled Resource Consumption weakness

References