VULNERABILITY INTELLIGENCE
CVE-2025-54363
EPSS probability0.41%
CISA KEVNot currently listed
Published2025-08-20
Last modified2026-06-17
Description
Microsoft Knack 0.12.0 allows Regular expression Denial of Service (ReDoS) in the knack.introspection module. extract_full_summary_from_signature employs an inefficient regular expression pattern: "\s(:param)\s+(.+?)\s:(.*)" that is susceptible to catastrophic backtracking when processing crafted docstrings containing a large volume of whitespace without a terminating colon. An attacker who can control or inject docstring content into affected applications can trigger excessive CPU consumption. This software is used by Azure CLI.
Weakness classification
- cve@mitre.org: CWE-1333