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TI-2025-06365 Aliases CVE-2025-6998GHSA-2g7m-ph9x-7q7m

Calibre Web 0.6.24 & Autocaliweb 0.7.0 - ReDoS

Priority HIGH 71CWE-1333Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-1333.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00958 61st percentileScored 2026-11-07
Fix Fixed Autocaliweb (Autocaliweb): 0.7.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Calibre WebCalibre Web0.6.24—No fix listedCNA
AutocaliwebAutocaliweb0.7.0 to before 0.7.10.7.1Patch availableCNA
—calibreweb (PyPI)up to 0.6.24—No fix listedGHSA-2g7m-ph9x-7q7m
  • Calibre Web VendorCalibre Web Affected 0.6.24 Fixed in — No fix listed CNA
  • Autocaliweb VendorAutocaliweb Affected 0.7.0 to before 0.7.1 Fixed in 0.7.1 Patch available CNA
  • calibreweb (PyPI) Vendor— Affected up to 0.6.24 Fixed in — No fix listed GHSA-2g7m-ph9x-7q7m

Remediation

  • Fix · CNA Autocaliweb (Autocaliweb) Fixed in 0.7.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Autocaliweb 0.7.1

    2 records Highest priority Priority HIGH 1 HIGH, 1 MEDIUM

    Other records, highest priority first

    • TI-2025-06745 Calibre Web 0.6.24 & Autocaliweb 0.7.0 - Blind CPriority MEDIUM 60
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-6998
  2. 2026-10-03 Alias added: GHSA-2g7m-ph9x-7q7m

References

Advisory 2

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences