--- id: CVE-2023-24329 title: >- An issue in the urllib.parse component of Python before 3.11.4 allows attackers to bypass blocklisting methods by supplying a URL that starts with blank characters. summary: >- An issue in the urllib.parse component of Python before 3.11.4 allows attackers to bypass blocklisting methods by supplying a URL that starts with blank characters. severity: high cvss: 7.5 cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N' cwe: - CWE-20 - CWE-20 vendor: python product: python affected: - python < 3.7.17 - 'python >= 3.8.0, < 3.8.17' - 'python >= 3.9.0, < 3.9.17' - 'python >= 3.10.0, < 3.10.12' - 'python >= 3.11.0, < 3.11.4' - fedora = 36 - fedora = 37 - fedora = 38 - active_iq_unified_manager - management_services_for_element_software - management_services_for_netapp_hci - ontap_select_deploy_administration_utility patched: - python 3.11.4 published: '2023-02-17' updated: '2026-10-14' sourceUpdated: '2026-10-14T23:17:14.647' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-24329' references: - url: 'https://github.com/python/cpython/issues/102153' label: cve@mitre.org - url: 'https://github.com/python/cpython/pull/99421' label: cve@mitre.org - url: 'https://lists.debian.org/debian-lts-announce/2023/09/msg00022.html' label: cve@mitre.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6PEVICI7YNGGMSL3UCMWGE66QFLATH72/ label: cve@mitre.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DSL6NSOAXWBJJ67XPLSSC74MNKZF3BBO/ label: cve@mitre.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EM2XLZSTXG44TMFXF4E6VTGKR2MQCW3G/ label: cve@mitre.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F2NY75GFDZ5T6YPN44D3VMFT5SUVTOTG/ label: cve@mitre.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GR5US3BYILYJ4SKBV6YBNPRUBAL5P2CN/ label: cve@mitre.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H23OSKC6UG6IWOQAUPW74YUHWRWVXJP7/ label: cve@mitre.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JZTLGV2HYFF4AMYJL25VDIGAIHCU7UPA/ label: cve@mitre.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LWC4WGXER5P6Q75RFGL7QUTPP3N5JR7T/ label: cve@mitre.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MZEHSXSCMA4WWQKXT6QV7AAR6SWNZ2VP/ label: cve@mitre.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O5SP4RT3RRS434ZS2HQKQJ3VZW7YPKYR/ label: cve@mitre.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OHHJHJRLEF3TDT2K3676CAUVRDD4CCMR/ label: cve@mitre.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PEUN6T22UJFXR7J5F6UUHCXXPKJ2DVHI/ label: cve@mitre.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PURM5CFDABEWAIWZFD2MQ7ZJGCPYSQ44/ label: cve@mitre.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q3J5N24ECS4B6MJDRO6UAYU6GPLYBDCL/ label: cve@mitre.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QRQHN7RWJQJHYP6E5EKESOYP5VDSHZG4/ label: cve@mitre.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RA2MBEEES6L46OD64OBSVUUMGKNGMOWW/ label: cve@mitre.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4IDB5OAR5Y4UK3HLMZBW4WEL2B7YFMJ/ label: cve@mitre.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TZH26JGNZ5XYPZ5SAU3NKSBSPRE5OHTG/ label: cve@mitre.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U2MZOJYGFCB5PPT6AKMAU72N7QOYWLBP/ label: cve@mitre.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UONZWLB4QVLQIY5CPDLEUEKH6WX4VQMC/ label: cve@mitre.org - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WTOAUJNDWZDRWVSXJ354AYZYKRMT56HU/ label: cve@mitre.org - url: 'https://pointernull.com/security/python-url-parse-problem.html' label: cve@mitre.org - url: 'https://security.netapp.com/advisory/ntap-20230324-0004/' label: cve@mitre.org - url: 'https://www.kb.cert.org/vuls/id/127587' label: cve@mitre.org - url: 'https://github.com/python/cpython/issues/102153' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://github.com/python/cpython/pull/99421' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://lists.debian.org/debian-lts-announce/2023/09/msg00022.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://lists.debian.org/debian-lts-announce/2024/11/msg00005.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://lists.debian.org/debian-lts-announce/2024/12/msg00000.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6PEVICI7YNGGMSL3UCMWGE66QFLATH72/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DSL6NSOAXWBJJ67XPLSSC74MNKZF3BBO/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EM2XLZSTXG44TMFXF4E6VTGKR2MQCW3G/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F2NY75GFDZ5T6YPN44D3VMFT5SUVTOTG/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GR5US3BYILYJ4SKBV6YBNPRUBAL5P2CN/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H23OSKC6UG6IWOQAUPW74YUHWRWVXJP7/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JZTLGV2HYFF4AMYJL25VDIGAIHCU7UPA/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LWC4WGXER5P6Q75RFGL7QUTPP3N5JR7T/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MZEHSXSCMA4WWQKXT6QV7AAR6SWNZ2VP/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O5SP4RT3RRS434ZS2HQKQJ3VZW7YPKYR/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OHHJHJRLEF3TDT2K3676CAUVRDD4CCMR/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PEUN6T22UJFXR7J5F6UUHCXXPKJ2DVHI/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PURM5CFDABEWAIWZFD2MQ7ZJGCPYSQ44/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q3J5N24ECS4B6MJDRO6UAYU6GPLYBDCL/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QRQHN7RWJQJHYP6E5EKESOYP5VDSHZG4/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RA2MBEEES6L46OD64OBSVUUMGKNGMOWW/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4IDB5OAR5Y4UK3HLMZBW4WEL2B7YFMJ/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TZH26JGNZ5XYPZ5SAU3NKSBSPRE5OHTG/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U2MZOJYGFCB5PPT6AKMAU72N7QOYWLBP/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UONZWLB4QVLQIY5CPDLEUEKH6WX4VQMC/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WTOAUJNDWZDRWVSXJ354AYZYKRMT56HU/ label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://pointernull.com/security/python-url-parse-problem.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://security.netapp.com/advisory/ntap-20230324-0004/' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.kb.cert.org/vuls/id/127587' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://cert-portal.siemens.com/productcert/html/ssa-398330.html' label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e tags: - nvd - exploit-available epss: 0.20459 epssPercentile: 0.97471 exploits: github: 4 githubRepos: - 'https://github.com/H4R335HR/CVE-2023-24329-PoC' - 'https://github.com/Pandante-Central/CVE-2023-24329-codeql-test' - 'https://github.com/PenTestMano/CVE-2023-24329-Exploit' checkedAt: '2026-10-15T00:02:42.045Z' exploitAvailable: true ingestedAt: '2026-10-15T00:02:07.126Z' --- ## Overview An issue in the urllib.parse component of Python before 3.11.4 allows attackers to bypass blocklisting methods by supplying a URL that starts with blank characters. ## Affected - `python < 3.7.17` - `python >= 3.8.0, < 3.8.17` - `python >= 3.9.0, < 3.9.17` - `python >= 3.10.0, < 3.10.12` - `python >= 3.11.0, < 3.11.4` - `fedora = 36` - `fedora = 37` - `fedora = 38` - `active_iq_unified_manager` - `management_services_for_element_software` - `management_services_for_netapp_hci` - `ontap_select_deploy_administration_utility` ## Remediation Upgrade past the affected range: - `python 3.11.4`