CVE-2025-54364
Withdrawn Advisory: Microsoft Knack ReDoS Vulnerability in the Introspection Module
Impact
### Withdrawn Advisory This advisory has been withdrawn because the attack surface of this vulnerability is outside of Knack's intended functionality.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](https://github.com/Azure/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).
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | knack | <= 0.12.0 | none recorded |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/microsoft/knack
- https://www.vulncheck.com/advisories/microsoft-knack-python-package-regular-expression-dos
- https://github.com/advisories/GHSA-xh9h-692f-mmg4
- https://nvd.nist.gov/vuln/detail/CVE-2025-54364
- https://github.com/microsoft/knack/issues/281
- https://github.com/microsoft/knack/issues/281#issuecomment-3218922941