GitHub Advisoryadvisory · PyPI

GHSA-2g7m-ph9x-7q7m Calibre Web and Autocaliweb have a ReDoS vulnerability

HIGH Published 2025-07-24 Modified 2025-07-28 Official page ↗
Aliases
CVE-2025-6998
Ecosystem
PyPI
Packages
calibreweb
Severity
High
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weaknesses
CWE-1333
Reviewed
2025-07-28

Affected packages

• PyPI calibreweb: <= 0.6.24 (no fix yet)

Description

ReDoS in strip_whitespaces() function in cps/string_helper.py in Calibre Web and Autocaliweb allows unauthenticated remote attackers to cause denial of service via specially crafted username parameter that triggers catastrophic backtracking during login. This issue affects Calibre Web: 0.6.24 (Nicolette); Autocaliweb: from 0.7.0 before 0.7.1.

Related

Alias · CVE (1)

  • CVE-2025-6998 ReDoS in strip_whitespaces() function in cps/string_helper.py in Calibre Web and Autocaliweb allows unauthenticated remote attackers to… vulnerability

Weakness · CWE (1)

  • CWE-1333 Inefficient Regular Expression Complexity weakness

References