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Package Instance

Lookup for vulnerable packages by Package URL.

Purlpkg:alpm/archlinux/python-urllib3@1.26.5-1
Typealpm
Namespacearchlinux
Namepython-urllib3
Version1.26.5-1
Qualifiers
Subpath
Is_vulnerablefalse
Next_non_vulnerable_versionnull
Latest_non_vulnerable_versionnull
Affected_by_vulnerabilities
Fixing_vulnerabilities
0
url VCID-8par-whwz-6kft
vulnerability_id VCID-8par-whwz-6kft
summary An issue was discovered in urllib3 before 1.26.5. When provided with a URL containing many @ characters in the authority component, the authority regular expression exhibits catastrophic backtracking, causing a denial of service if a URL were passed as a parameter or redirected to via an HTTP redirect.
references
0
reference_url https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-33503.json
reference_id
reference_type
scores
0
value 7.5
scoring_system cvssv3
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
url https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-33503.json
1
reference_url https://api.first.org/data/v1/epss?cve=CVE-2021-33503
reference_id
reference_type
scores
0
value 0.00863
scoring_system epss
scoring_elements 0.75107
published_at 2026-04-21T12:55:00Z
1
value 0.00863
scoring_system epss
scoring_elements 0.75117
published_at 2026-04-18T12:55:00Z
2
value 0.00863
scoring_system epss
scoring_elements 0.7507
published_at 2026-04-08T12:55:00Z
3
value 0.00863
scoring_system epss
scoring_elements 0.7511
published_at 2026-04-16T12:55:00Z
4
value 0.00863
scoring_system epss
scoring_elements 0.75028
published_at 2026-04-01T12:55:00Z
5
value 0.00863
scoring_system epss
scoring_elements 0.75072
published_at 2026-04-13T12:55:00Z
6
value 0.00863
scoring_system epss
scoring_elements 0.75083
published_at 2026-04-12T12:55:00Z
7
value 0.00863
scoring_system epss
scoring_elements 0.75105
published_at 2026-04-11T12:55:00Z
8
value 0.00863
scoring_system epss
scoring_elements 0.75031
published_at 2026-04-02T12:55:00Z
9
value 0.00863
scoring_system epss
scoring_elements 0.7506
published_at 2026-04-04T12:55:00Z
10
value 0.00863
scoring_system epss
scoring_elements 0.75036
published_at 2026-04-07T12:55:00Z
11
value 0.00863
scoring_system epss
scoring_elements 0.75082
published_at 2026-04-09T12:55:00Z
url https://api.first.org/data/v1/epss?cve=CVE-2021-33503
2
reference_url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33503
reference_id
reference_type
scores
url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33503
3
reference_url https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
reference_id
reference_type
scores
0
value 7.5
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
url https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
4
reference_url https://github.com/advisories/GHSA-q2q7-5pp4-w6pg
reference_id
reference_type
scores
0
value HIGH
scoring_system cvssv3.1_qr
scoring_elements
url https://github.com/advisories/GHSA-q2q7-5pp4-w6pg
5
reference_url https://github.com/pypa/advisory-database/tree/main/vulns/urllib3/PYSEC-2021-108.yaml
reference_id
reference_type
scores
0
value 7.5
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1
value 8.7
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
2
value HIGH
scoring_system generic_textual
scoring_elements
url https://github.com/pypa/advisory-database/tree/main/vulns/urllib3/PYSEC-2021-108.yaml
6
reference_url https://github.com/urllib3/urllib3
reference_id
reference_type
scores
0
value 7.5
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1
value 8.7
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
2
value HIGH
scoring_system generic_textual
scoring_elements
url https://github.com/urllib3/urllib3
7
reference_url https://github.com/urllib3/urllib3/commit/2d4a3fee6de2fa45eb82169361918f759269b4ec
reference_id
reference_type
scores
0
value 7.5
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1
value 8.7
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
2
value HIGH
scoring_system generic_textual
scoring_elements
url https://github.com/urllib3/urllib3/commit/2d4a3fee6de2fa45eb82169361918f759269b4ec
8
reference_url https://github.com/urllib3/urllib3/commit/5b047b645f5f93900d5e2fc31230848c25eb1f5f#diff-52026d639119bf1e0364836b4e8a18bd9ed3c95c6ba39b26534a5057a65e35bbR65
reference_id
reference_type
scores
0
value 7.5
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1
value 8.7
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
2
value HIGH
scoring_system generic_textual
scoring_elements
url https://github.com/urllib3/urllib3/commit/5b047b645f5f93900d5e2fc31230848c25eb1f5f#diff-52026d639119bf1e0364836b4e8a18bd9ed3c95c6ba39b26534a5057a65e35bbR65
9
reference_url https://github.com/urllib3/urllib3/security/advisories/GHSA-q2q7-5pp4-w6pg
reference_id
reference_type
scores
0
value 7.5
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1
value HIGH
scoring_system cvssv3.1_qr
scoring_elements
2
value 8.7
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
3
value HIGH
scoring_system generic_textual
scoring_elements
url https://github.com/urllib3/urllib3/security/advisories/GHSA-q2q7-5pp4-w6pg
10
reference_url https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6SCV7ZNAHS3E6PBFLJGENCDRDRWRZZ6W
reference_id
reference_type
scores
0
value 7.5
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1
value 8.7
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
2
value HIGH
scoring_system generic_textual
scoring_elements
url https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6SCV7ZNAHS3E6PBFLJGENCDRDRWRZZ6W
11
reference_url https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FMUGWEAUYGGHTPPXT6YBD53WYXQGVV73
reference_id
reference_type
scores
0
value 7.5
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1
value 8.7
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
2
value HIGH
scoring_system generic_textual
scoring_elements
url https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FMUGWEAUYGGHTPPXT6YBD53WYXQGVV73
12
reference_url https://nvd.nist.gov/vuln/detail/CVE-2021-33503
reference_id
reference_type
scores
0
value 7.5
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1
value 8.7
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
2
value HIGH
scoring_system generic_textual
scoring_elements
url https://nvd.nist.gov/vuln/detail/CVE-2021-33503
13
reference_url https://security.gentoo.org/glsa/202107-36
reference_id
reference_type
scores
0
value 7.5
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1
value 8.7
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
2
value HIGH
scoring_system generic_textual
scoring_elements
url https://security.gentoo.org/glsa/202107-36
14
reference_url https://www.oracle.com/security-alerts/cpuoct2021.html
reference_id
reference_type
scores
0
value 7.5
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1
value 8.7
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
2
value HIGH
scoring_system generic_textual
scoring_elements
url https://www.oracle.com/security-alerts/cpuoct2021.html
15
reference_url https://bugzilla.redhat.com/show_bug.cgi?id=1968074
reference_id 1968074
reference_type
scores
url https://bugzilla.redhat.com/show_bug.cgi?id=1968074
16
reference_url https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=989848
reference_id 989848
reference_type
scores
url https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=989848
17
reference_url https://security.archlinux.org/ASA-202106-25
reference_id ASA-202106-25
reference_type
scores
url https://security.archlinux.org/ASA-202106-25
18
reference_url https://security.archlinux.org/AVG-2038
reference_id AVG-2038
reference_type
scores
0
value Medium
scoring_system archlinux
scoring_elements
url https://security.archlinux.org/AVG-2038
19
reference_url https://access.redhat.com/errata/RHSA-2021:3473
reference_id RHSA-2021:3473
reference_type
scores
url https://access.redhat.com/errata/RHSA-2021:3473
20
reference_url https://access.redhat.com/errata/RHSA-2021:4160
reference_id RHSA-2021:4160
reference_type
scores
url https://access.redhat.com/errata/RHSA-2021:4160
21
reference_url https://access.redhat.com/errata/RHSA-2021:4162
reference_id RHSA-2021:4162
reference_type
scores
url https://access.redhat.com/errata/RHSA-2021:4162
22
reference_url https://access.redhat.com/errata/RHSA-2021:4702
reference_id RHSA-2021:4702
reference_type
scores
url https://access.redhat.com/errata/RHSA-2021:4702
23
reference_url https://usn.ubuntu.com/5812-1/
reference_id USN-5812-1
reference_type
scores
url https://usn.ubuntu.com/5812-1/
fixed_packages
0
url pkg:alpm/archlinux/python-urllib3@1.26.5-1
purl pkg:alpm/archlinux/python-urllib3@1.26.5-1
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:alpm/archlinux/python-urllib3@1.26.5-1
aliases CVE-2021-33503, GHSA-q2q7-5pp4-w6pg, PYSEC-2021-108
risk_score 4.0
exploitability 0.5
weighted_severity 8.0
resource_url http://public2.vulnerablecode.io/vulnerabilities/VCID-8par-whwz-6kft
Risk_scorenull
Resource_urlhttp://public2.vulnerablecode.io/packages/pkg:alpm/archlinux/python-urllib3@1.26.5-1