PYSEC-2026-1228 Calibre Web and Autocaliweb have a ReDoS vulnerability

ReDoS in stripwhitespaces function in cps/stringhelper.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...

Regular Expression Denial Of Service (ReDoS)

calibreweb is vulnerable to Regular Expression Denial of Service ReDoS. The vulnerability is due to inefficient regular expression processing because the stripwhitespaces function allows catastrophic backtracking when processing a specially crafted username parameter during login...

Regular Expression Denial of Service (ReDoS)

Overview calibreweb is a Web app for browsing, reading and downloading eBooks stored in a Calibre database. Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS via the stripwhitespaces function in cps/stringhelper.py file. An attacker can cause the...

Calibre-Web 安全漏洞

Calibre-Web is a web application for browsing, reading and downloading eBooks from the Calibre database by Jan B, a personal developer. A security vulnerability exists in Calibre-Web version 0.6.24, which stems from a regular expression denial of service vulnerability in the stripwhitespaces...