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.
Published: 2025-07-24
Score: 8.7 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-22540 Calibre Web and Autocaliweb have a ReDoS vulnerability
Github GHSA Github GHSA GHSA-2g7m-ph9x-7q7m Calibre Web and Autocaliweb have a ReDoS vulnerability
History

Fri, 25 Jul 2025 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Janeczku
Janeczku calibre-web
Vendors & Products Janeczku
Janeczku calibre-web

Fri, 25 Jul 2025 13:30:00 +0000

Type Values Removed Values Added
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; Autocaliweb: from 0.7.0 before 0.7.1. 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.

Fri, 25 Jul 2025 13:15:00 +0000

Type Values Removed Values Added
Description ReDoS in strip_whitespaces() function in cps/string_helper.py in janeczku Calibre Web 0.6.24 (Nicolette) allows unauthenticated remote attackers to cause denial of service via specially crafted username parameter that triggers catastrophic backtracking during login. ReDoS in strip_whitespaces() function in cps/string_helper.py in gelbphoenix Autocaliweb 0.7.0 on allows unauthenticated remote attackers to cause denial of service via specially crafted username parameter that triggers catastrophic backtracking during login. 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; Autocaliweb: from 0.7.0 before 0.7.1.

Thu, 24 Jul 2025 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 24 Jul 2025 19:45:00 +0000

Type Values Removed Values Added
Description ReDoS in strip_whitespaces() function in cps/string_helper.py in janeczku Calibre Web 0.6.24 (Nicolette) allows unauthenticated remote attackers to cause denial of service via specially crafted username parameter that triggers catastrophic backtracking during login. ReDoS in strip_whitespaces() function in cps/string_helper.py in gelbphoenix Autocaliweb 0.7.0 on allows unauthenticated remote attackers to cause denial of service via specially crafted username parameter that triggers catastrophic backtracking during login.
Title Calibre Web 0.6.24 & Autocaliweb 0.7.0 - ReDoS
Weaknesses CWE-1333
References
Metrics cvssV4_0

{'score': 8.7, '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'}


Subscriptions

Janeczku Calibre-web
cve-icon MITRE

Status: PUBLISHED

Assigner: Fluid Attacks

Published:

Updated: 2025-07-25T13:17:33.295Z

Reserved: 2025-07-01T23:26:57.856Z

Link: CVE-2025-6998

cve-icon Vulnrichment

Updated: 2025-07-24T19:50:13.054Z

cve-icon NVD

Status : Deferred

Published: 2025-07-24T20:15:27.013

Modified: 2026-04-15T00:35:42.020

Link: CVE-2025-6998

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-07-25T15:53:56Z

Weaknesses