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Vulnerability details: VCID-4g85-39df-dfg4
Vulnerability ID VCID-4g85-39df-dfg4
Aliases CVE-2023-43804
GHSA-v845-jxx5-vc9f
PYSEC-2023-192
Summary `Cookie` HTTP header isn't stripped on cross-origin redirects urllib3 doesn't treat the `Cookie` HTTP header special or provide any helpers for managing cookies over HTTP, that is the responsibility of the user. However, it is possible for a user to specify a `Cookie` header and unknowingly leak information via HTTP redirects to a different origin if that user doesn't disable redirects explicitly. Users **must** handle redirects themselves instead of relying on urllib3's automatic redirects to achieve safe processing of the `Cookie` header, thus we decided to strip the header by default in order to further protect users who aren't using the correct approach. ## Affected usages We believe the number of usages affected by this advisory is low. It requires all of the following to be true to be exploited: * Using an affected version of urllib3 (patched in v1.26.17 and v2.0.6) * Using the `Cookie` header on requests, which is mostly typical for impersonating a browser. * Not disabling HTTP redirects * Either not using HTTPS or for the origin server to redirect to a malicious origin. ## Remediation * Upgrading to at least urllib3 v1.26.17 or v2.0.6 * Disabling HTTP redirects using `redirects=False` when sending requests. * Not using the `Cookie` header.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 5.9 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-43804.json
epss 0.00554 https://api.first.org/data/v1/epss?cve=CVE-2023-43804
cvssv3.1 5.9 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 5.9 https://github.com/pypa/advisory-database/tree/main/vulns/urllib3/PYSEC-2023-192.yaml
generic_textual HIGH https://github.com/pypa/advisory-database/tree/main/vulns/urllib3/PYSEC-2023-192.yaml
cvssv3.1 5.9 https://github.com/urllib3/urllib3
generic_textual HIGH https://github.com/urllib3/urllib3
cvssv3.1 5.9 https://github.com/urllib3/urllib3/commit/01220354d389cd05474713f8c982d05c9b17aafb
cvssv3.1 8.1 https://github.com/urllib3/urllib3/commit/01220354d389cd05474713f8c982d05c9b17aafb
generic_textual HIGH https://github.com/urllib3/urllib3/commit/01220354d389cd05474713f8c982d05c9b17aafb
cvssv3.1 5.9 https://github.com/urllib3/urllib3/commit/644124ecd0b6e417c527191f866daa05a5a2056d
cvssv3.1 8.1 https://github.com/urllib3/urllib3/commit/644124ecd0b6e417c527191f866daa05a5a2056d
generic_textual HIGH https://github.com/urllib3/urllib3/commit/644124ecd0b6e417c527191f866daa05a5a2056d
cvssv3.1 5.9 https://github.com/urllib3/urllib3/security/advisories/GHSA-v845-jxx5-vc9f
cvssv3.1 8.1 https://github.com/urllib3/urllib3/security/advisories/GHSA-v845-jxx5-vc9f
generic_textual HIGH https://github.com/urllib3/urllib3/security/advisories/GHSA-v845-jxx5-vc9f
cvssv3.1 5.9 https://lists.debian.org/debian-lts-announce/2023/10/msg00012.html
cvssv3.1 8.1 https://lists.debian.org/debian-lts-announce/2023/10/msg00012.html
generic_textual HIGH https://lists.debian.org/debian-lts-announce/2023/10/msg00012.html
cvssv3.1 5.9 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5F5CUBAN5XMEBVBZPHFITBLMJV5FIJJ5
generic_textual HIGH https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5F5CUBAN5XMEBVBZPHFITBLMJV5FIJJ5
cvssv3.1 5.9 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/I3PR7C6RJ6JUBQKIJ644DMIJSUP36VDY
generic_textual HIGH https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/I3PR7C6RJ6JUBQKIJ644DMIJSUP36VDY
cvssv3.1 5.9 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAGZXYJ7H2G3SB47M453VQVNAWKAEJJ
generic_textual HIGH https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAGZXYJ7H2G3SB47M453VQVNAWKAEJJ
cvssv3.1 5.9 https://nvd.nist.gov/vuln/detail/CVE-2023-43804
cvssv3.1 8.1 https://nvd.nist.gov/vuln/detail/CVE-2023-43804
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2023-43804
cvssv3.1 5.9 https://security.netapp.com/advisory/ntap-20241213-0007
generic_textual HIGH https://security.netapp.com/advisory/ntap-20241213-0007
cvssv3.1 5.9 https://www.vicarius.io/vsociety/posts/cve-2023-43804-urllib3-vulnerability-3
generic_textual HIGH https://www.vicarius.io/vsociety/posts/cve-2023-43804-urllib3-vulnerability-3
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-43804.json
https://api.first.org/data/v1/epss?cve=CVE-2023-43804
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-43804
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/pypa/advisory-database/tree/main/vulns/urllib3/PYSEC-2023-192.yaml
https://github.com/urllib3/urllib3
https://github.com/urllib3/urllib3/commit/01220354d389cd05474713f8c982d05c9b17aafb
https://github.com/urllib3/urllib3/commit/644124ecd0b6e417c527191f866daa05a5a2056d
https://github.com/urllib3/urllib3/security/advisories/GHSA-v845-jxx5-vc9f
https://lists.debian.org/debian-lts-announce/2023/10/msg00012.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5F5CUBAN5XMEBVBZPHFITBLMJV5FIJJ5
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5F5CUBAN5XMEBVBZPHFITBLMJV5FIJJ5/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/I3PR7C6RJ6JUBQKIJ644DMIJSUP36VDY
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/I3PR7C6RJ6JUBQKIJ644DMIJSUP36VDY/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAGZXYJ7H2G3SB47M453VQVNAWKAEJJ
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAGZXYJ7H2G3SB47M453VQVNAWKAEJJ/
https://nvd.nist.gov/vuln/detail/CVE-2023-43804
https://security.netapp.com/advisory/ntap-20241213-0007
https://security.netapp.com/advisory/ntap-20241213-0007/
https://www.vicarius.io/vsociety/posts/cve-2023-43804-urllib3-vulnerability-3
1053626 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1053626
2242493 https://bugzilla.redhat.com/show_bug.cgi?id=2242493
cpe:2.3:a:python:urllib3:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:python:urllib3:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
GHSA-v845-jxx5-vc9f https://github.com/advisories/GHSA-v845-jxx5-vc9f
RHSA-2023:6158 https://access.redhat.com/errata/RHSA-2023:6158
RHSA-2023:6812 https://access.redhat.com/errata/RHSA-2023:6812
RHSA-2023:7378 https://access.redhat.com/errata/RHSA-2023:7378
RHSA-2023:7385 https://access.redhat.com/errata/RHSA-2023:7385
RHSA-2023:7407 https://access.redhat.com/errata/RHSA-2023:7407
RHSA-2023:7435 https://access.redhat.com/errata/RHSA-2023:7435
RHSA-2023:7523 https://access.redhat.com/errata/RHSA-2023:7523
RHSA-2023:7528 https://access.redhat.com/errata/RHSA-2023:7528
RHSA-2023:7753 https://access.redhat.com/errata/RHSA-2023:7753
RHSA-2023:7851 https://access.redhat.com/errata/RHSA-2023:7851
RHSA-2024:0116 https://access.redhat.com/errata/RHSA-2024:0116
RHSA-2024:0133 https://access.redhat.com/errata/RHSA-2024:0133
RHSA-2024:0187 https://access.redhat.com/errata/RHSA-2024:0187
RHSA-2024:0300 https://access.redhat.com/errata/RHSA-2024:0300
RHSA-2024:0464 https://access.redhat.com/errata/RHSA-2024:0464
RHSA-2024:0588 https://access.redhat.com/errata/RHSA-2024:0588
RHSA-2024:1383 https://access.redhat.com/errata/RHSA-2024:1383
RHSA-2024:2159 https://access.redhat.com/errata/RHSA-2024:2159
RHSA-2024:2985 https://access.redhat.com/errata/RHSA-2024:2985
RHSA-2024:2986 https://access.redhat.com/errata/RHSA-2024:2986
RHSA-2024:2987 https://access.redhat.com/errata/RHSA-2024:2987
USN-6473-1 https://usn.ubuntu.com/6473-1/
USN-6473-2 https://usn.ubuntu.com/6473-2/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-43804.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N Found at https://github.com/pypa/advisory-database/tree/main/vulns/urllib3/PYSEC-2023-192.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N Found at https://github.com/urllib3/urllib3
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N Found at https://github.com/urllib3/urllib3/commit/01220354d389cd05474713f8c982d05c9b17aafb
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N Found at https://github.com/urllib3/urllib3/commit/01220354d389cd05474713f8c982d05c9b17aafb
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N Found at https://github.com/urllib3/urllib3/commit/644124ecd0b6e417c527191f866daa05a5a2056d
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N Found at https://github.com/urllib3/urllib3/commit/644124ecd0b6e417c527191f866daa05a5a2056d
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N Found at https://github.com/urllib3/urllib3/security/advisories/GHSA-v845-jxx5-vc9f
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N Found at https://github.com/urllib3/urllib3/security/advisories/GHSA-v845-jxx5-vc9f
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N Found at https://lists.debian.org/debian-lts-announce/2023/10/msg00012.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N Found at https://lists.debian.org/debian-lts-announce/2023/10/msg00012.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N Found at https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5F5CUBAN5XMEBVBZPHFITBLMJV5FIJJ5
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N Found at https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/I3PR7C6RJ6JUBQKIJ644DMIJSUP36VDY
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N Found at https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAGZXYJ7H2G3SB47M453VQVNAWKAEJJ
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2023-43804
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

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Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2023-43804
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

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Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N Found at https://security.netapp.com/advisory/ntap-20241213-0007
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N Found at https://www.vicarius.io/vsociety/posts/cve-2023-43804-urllib3-vulnerability-3
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Exploit Prediction Scoring System (EPSS)
Percentile 0.67051
EPSS Score 0.00554
Published At June 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-01T12:13:40.565144+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/10/GHSA-v845-jxx5-vc9f/GHSA-v845-jxx5-vc9f.json 36.1.3