CVE-2025-6998
Calibre Web 0.6.24 & Autocaliweb 0.7.0 - ReDoS
- State
- Published
- Severity
- 8.7 High
- Published
- Jul 24, 2025
- Updated
- Jul 25, 2025
- Reserved
- Jul 1, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | Fluid Attacks |
Weaknesses
- CWE-1333 Inefficient Regular Expression Complexity
Affected Products
| Product | Versions |
|---|---|
Calibre WebCalibre Web |
|
AutocaliwebAutocaliweb |
|
References
- https://fluidattacks.com/advisories/megadeththird-party-advisory
- https://github.com/janeczku/calibre-webproduct
- https://github.com/gelbphoenix/autocaliwebproduct
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