CVE-2025-6998CWE-1333

Calibre Web 0.6.24 & Autocaliweb 0.7.0 - ReDoS

High · published July 24, 2025

CVSS v4.0
8.7
EPSS
1%
Percentile
59.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
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
EPSS
0.00892 · 59.0th percentile
Weakness
CWE-1333 · Inefficient Regular Expression Complexity
Published
2025-07-24T19:39Z
EPSS history
Timeline
  • 24 JUL 19:39Z
    Calibre Web 0.6.24 & Autocaliweb 0.7.0 - ReDoS
    cvelistv5