CVE-2025-6998

Calibre Web 0.6.24 & Autocaliweb 0.7.0 - ReDoS

HIGH
8.7
CVSS Score
Published: July 24, 2025 at 07:39 PM UTC
Updated: June 17, 2026 at 10:03 AM UTC
2 products affected across 2 vendorsCalibre WebAutocaliweb

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Severity
HIGH8.7
Exploit prediction
EPSS 1.0%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0.7.0 ≤ v < 0.7.10.7.0
Affected range stops below 0.7.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.7HIGHFluid Attacks
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-1333

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