{"url":"http://public2.vulnerablecode.io/api/packages/578452?format=json","purl":"pkg:pypi/flask-security@1.6.0","type":"pypi","namespace":"","name":"flask-security","version":"1.6.0","qualifiers":{},"subpath":"","is_vulnerable":true,"next_non_vulnerable_version":null,"latest_non_vulnerable_version":null,"affected_by_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/48675?format=json","vulnerability_id":"VCID-9rq5-3ey5-kfc8","summary":"Flask-Security vulnerable to Open Redirect\nThis affects all versions of package Flask-Security. When using the `get_post_logout_redirect` and `get_post_login_redirect` functions, it is possible to bypass URL validation and redirect a user to an arbitrary URL by providing multiple back slashes such as `\\\\\\evil.com/path`. This vulnerability is only exploitable if an alternative WSGI server other than Werkzeug is used, or the default behaviour of Werkzeug is modified using `'autocorrect_location_header=False`.\n\n**Note:** Flask-Security is not maintained anymore.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-23385","reference_id":"","reference_type":"","scores":[{"value":"0.00185","scoring_system":"epss","scoring_elements":"0.39952","published_at":"2026-05-29T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-23385"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23385","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23385"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"5.4","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://github.com/mattupstate/flask-security","reference_id":"","reference_type":"","scores":[{"value":"6.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/mattupstate/flask-security"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23385","reference_id":"","reference_type":"","scores":[{"value":"6.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23385"},{"reference_url":"https://security.snyk.io/vuln/SNYK-PYTHON-FLASKSECURITY-1293234","reference_id":"","reference_type":"","scores":[{"value":"6.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://security.snyk.io/vuln/SNYK-PYTHON-FLASKSECURITY-1293234"},{"reference_url":"https://snyk.io/blog/url-confusion-vulnerabilities","reference_id":"","reference_type":"","scores":[{"value":"6.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://snyk.io/blog/url-confusion-vulnerabilities"},{"reference_url":"https://snyk.io/blog/url-confusion-vulnerabilities/","reference_id":"","reference_type":"","scores":[],"url":"https://snyk.io/blog/url-confusion-vulnerabilities/"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1021279","reference_id":"1021279","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1021279"},{"reference_url":"https://github.com/advisories/GHSA-cg8c-gc2j-2wf7","reference_id":"GHSA-cg8c-gc2j-2wf7","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-cg8c-gc2j-2wf7"},{"reference_url":"https://usn.ubuntu.com/6792-1/","reference_id":"USN-6792-1","reference_type":"","scores":[],"url":"https://usn.ubuntu.com/6792-1/"}],"fixed_packages":[],"aliases":["CVE-2021-23385","GHSA-cg8c-gc2j-2wf7"],"risk_score":null,"exploitability":null,"weighted_severity":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-9rq5-3ey5-kfc8"}],"fixing_vulnerabilities":[],"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/packages/pkg:pypi/flask-security@1.6.0"}