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Package Instance

Lookup for vulnerable packages by Package URL.

Purlpkg:pypi/flask-unchained@0.7.6
Typepypi
Namespace
Nameflask-unchained
Version0.7.6
Qualifiers
Subpath
Is_vulnerabletrue
Next_non_vulnerable_version0.9.0
Latest_non_vulnerable_version0.9.0
Affected_by_vulnerabilities
0
url VCID-3wbt-wcwe-r3b3
vulnerability_id VCID-3wbt-wcwe-r3b3
summary This affects the package Flask-Unchained before 0.9.0. When using the the _validate_redirect_url function, 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.
references
0
reference_url https://api.first.org/data/v1/epss?cve=CVE-2021-23393
reference_id
reference_type
scores
0
value 0.002
scoring_system epss
scoring_elements 0.42001
published_at 2026-06-11T12:55:00Z
url https://api.first.org/data/v1/epss?cve=CVE-2021-23393
1
reference_url https://github.com/advisories/GHSA-pjc4-3w99-j7v4
reference_id
reference_type
scores
0
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
1
value MODERATE
scoring_system cvssv3.1_qr
scoring_elements
2
value 5.3
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
3
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/advisories/GHSA-pjc4-3w99-j7v4
2
reference_url https://github.com/briancappello/flask-unchained/commit/2bfeedf1bc31df851cab8c66df0c432b10406aad
reference_id
reference_type
scores
0
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
1
value 5.3
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
2
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/briancappello/flask-unchained/commit/2bfeedf1bc31df851cab8c66df0c432b10406aad
3
reference_url https://github.com/briancappello/flask-unchained/commit/71e36b28166f9ffbe0a991f51127f0984f7e6a40
reference_id
reference_type
scores
0
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
1
value 5.3
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
2
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/briancappello/flask-unchained/commit/71e36b28166f9ffbe0a991f51127f0984f7e6a40
4
reference_url https://github.com/pypa/advisory-database/tree/main/vulns/flask-unchained/PYSEC-2021-96.yaml
reference_id
reference_type
scores
0
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
1
value 5.3
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
2
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/pypa/advisory-database/tree/main/vulns/flask-unchained/PYSEC-2021-96.yaml
5
reference_url https://nvd.nist.gov/vuln/detail/CVE-2021-23393
reference_id
reference_type
scores
0
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
1
value 5.3
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
2
value MODERATE
scoring_system generic_textual
scoring_elements
url https://nvd.nist.gov/vuln/detail/CVE-2021-23393
6
reference_url https://snyk.io/vuln/SNYK-PYTHON-FLASKUNCHAINED-1293189
reference_id
reference_type
scores
0
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
1
value 5.3
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
2
value MODERATE
scoring_system generic_textual
scoring_elements
url https://snyk.io/vuln/SNYK-PYTHON-FLASKUNCHAINED-1293189
fixed_packages
0
url pkg:pypi/flask-unchained@0.9.0
purl pkg:pypi/flask-unchained@0.9.0
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:pypi/flask-unchained@0.9.0
aliases CVE-2021-23393, GHSA-pjc4-3w99-j7v4, PYSEC-2021-96, SNYK-PYTHON-FLASKUNCHAINED-1293189
risk_score null
exploitability 0.5
weighted_severity 0.0
resource_url http://public2.vulnerablecode.io/vulnerabilities/VCID-3wbt-wcwe-r3b3
Fixing_vulnerabilities
Risk_scorenull
Resource_urlhttp://public2.vulnerablecode.io/packages/pkg:pypi/flask-unchained@0.7.6