{"schemaVersion":3,"id":"USN-7612-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"python-flask-cors vulnerabilities\n\nIt was discovered that Flask-CORS did not correctly handle certain regular\nexpressions. A remote attacker could possibly use this issue to leak\nsensitive information or bypass authentication mechanisms. (CVE-2024-6839)\nIt was discovered that Flask-CORS allowed certain CORS headers to be\nenabled by default. A remote attacker could possibly use this issue to leak\nsensitive information. This issue only affected Ubuntu 20.04 LTS, Ubuntu\n22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 24.10. (CVE-2024-6221)  It was\ndiscovered that Flask-CORS did not correctly handle case sensitivity when\nmatching paths. A remote attacker could possibly use this issue to leak\nsensitive information. (CVE-2024-6866)  It was discovered that Flask-CORS\ndid not correctly handle certain characters in URL paths. A remote attacker\ncould possibly use this issue to leak sensitive information or bypass\nauthentication mechanisms. (CVE-2024-6844)  Elias Hohl was discovered that\nFlask-CORS did not correctly sanitize log entries. A remote attacker could\npossibly use this issue to corrupt log files. This issue only affected\nUbuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2024-1681)","dates":{"published":"2025-07-02T04:59:38.000Z","modified":"2026-04-27T18:08:36.001Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"ubuntu","product":"python-flask-cors","name":"python-flask-cors","label":"python-flask-cors","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/python-flask-cors","purlType":"deb","versions":[{"text":"< 3.0.8-2ubuntu0.1+esm1","noFixRecorded":false,"fixedIn":null},{"text":"< 3.0.9-2ubuntu0.1","noFixRecorded":false,"fixedIn":null},{"text":"< 4.0.0-1ubuntu0.1~esm1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.0.8-2ubuntu0.1+esm1 | < 3.0.9-2ubuntu0.1 | < 4.0.0-1ubuntu0.1~esm1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-7612-1","label":"ubuntu.com/security/notices/USN-7612-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2024-1681","label":"ubuntu.com/security/CVE-2024-1681","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2024-6221","label":"ubuntu.com/security/CVE-2024-6221","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2024-6839","label":"ubuntu.com/security/CVE-2024-6839","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2024-6844","label":"ubuntu.com/security/CVE-2024-6844","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2024-6866","label":"ubuntu.com/security/CVE-2024-6866","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2024-1681","CVE-2024-6221","CVE-2024-6839","CVE-2024-6844","CVE-2024-6866"],"downstream":[],"duplicates":[],"related":["CVE-2024-1681","CVE-2024-6221","CVE-2024-6839","CVE-2024-6844","CVE-2024-6866"]},"timeline":[{"kind":"published","date":"2025-07-02T04:59:38.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-27T18:08:36.001Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T19:49:50.141Z","stale":false,"partial":false}}