{"id":"CVE-2025-6998","aliases":["GHSA-2g7m-ph9x-7q7m","PYSEC-2026-1228"],"url":"https://o3.security/vulnerability/CVE-2025-6998","summary":"Calibre Web 0.6.24 & Autocaliweb 0.7.0 - ReDoS","details":"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":"2025-07-24T19:39:17.709Z","modified":"2026-08-12T03:51:45.030912887Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"calibreweb","fixedVersion":null}],"fix":null,"references":[{"type":"ADVISORY","url":"https://fluidattacks.com/advisories/megadeth"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6998.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-6998"},{"type":"PACKAGE","url":"https://github.com/gelbphoenix/autocaliweb"},{"type":"PACKAGE","url":"https://github.com/janeczku/calibre-web"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:45.030912887Z"}}