GHSA-xh9h-692f-mmg4

Suggest an improvement
Source
https://github.com/advisories/GHSA-xh9h-692f-mmg4
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/08/GHSA-xh9h-692f-mmg4/GHSA-xh9h-692f-mmg4.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-xh9h-692f-mmg4
Aliases
Related
Withdrawn
2025-08-29T20:14:37Z
Published
2025-08-20T03:30:21Z
Modified
2026-02-04T02:33:57.194777Z
Severity
  • 1.2 (Low) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U CVSS Calculator
Summary
Withdrawn Advisory: Microsoft Knack ReDoS Vulnerability in the Introspection Module
Details

Withdrawn Advisory

This advisory has been withdrawn because the attack surface of this vulnerability is outside of Knack's intended functionality. The maintainer states the following:

These CVEs are invalid. Knack is a CLI framework used by Azure CLI. It's a local library, not a web service. In addition, the regex is used to extract function and parameter docstrings from the source code. It is not used to match user input. Therefore, it does not expose any attack surface. There is no way to use it for ReDoS attack.

This link is maintained to preserve external references.

Original Description

Microsoft Knack 0.12.0 allows Regular expression Denial of Service (ReDoS) in the knack.introspection module (issue 2 of 2).

Database specific 
{
    "cwe_ids": [
        "CWE-1333"
    ],
    "severity": "LOW",
    "github_reviewed": true,
    "nvd_published_at": "2025-08-20T03:15:35Z",
    "github_reviewed_at": "2025-08-21T15:01:00Z"
}
References

Affected packages

PyPI / knack

Package

Name
knack
View open source insights on deps.dev
Purl
pkg:pypi/knack

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Last affected
0.12.0

Affected versions

0.*
0.0.1
0.1.0
0.1.1
0.2.0
0.3.0
0.3.1
0.3.2
0.3.3
0.4.0
0.4.1
0.4.2
0.4.3
0.4.4
0.4.5
0.5.0
0.5.1
0.5.2
0.5.3
0.5.4
0.6.0
0.6.1
0.6.2
0.6.3
0.7.0rc1
0.7.0rc3
0.7.0rc4
0.7.0
0.7.1
0.7.2
0.8.0rc1
0.8.0rc2
0.8.0
0.8.1
0.8.2
0.9.0
0.10.0
0.10.1
0.11.0
0.12.0

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/08/GHSA-xh9h-692f-mmg4/GHSA-xh9h-692f-mmg4.json"