{"id":"CVE-2024-6844","aliases":["GHSA-8vgw-p6qm-5gr7","PYSEC-2026-1385"],"url":"https://o3.security/vulnerability/CVE-2024-6844","summary":"Inconsistent CORS Matching Due to Handling of '+' in URL Path in corydolphin/flask-cors","details":"A vulnerability in corydolphin/flask-cors version 4.0.1 allows for inconsistent CORS matching due to the handling of the '+' character in URL paths. The request.path is passed through the unquote_plus function, which converts the '+' character to a space ' '. This behavior leads to incorrect path normalization, causing potential mismatches in CORS configuration. As a result, endpoints may not be matched correctly to their CORS settings, leading to unexpected CORS policy application. This can cause unauthorized cross-origin access or block valid requests, creating security vulnerabilities and usability issues.","published":"2025-03-20T10:10:51.818Z","modified":"2026-08-12T03:51:14.076682109Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},"epss":{"score":0.00308,"percentile":0.23629,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"flask-cors","fixedVersion":"6.0.0"}],"fix":null,"references":[{"type":"WEB","url":"https://huntr.com/bounties/731a6cd4-d05f-4fe6-8f5b-fe088d7b34e0"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00049.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/6xxx/CVE-2024-6844.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-6844"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:14.076682109Z"}}