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Vulnerability details: VCID-pd4x-3cee-t7g3
Vulnerability ID VCID-pd4x-3cee-t7g3
Aliases CVE-2018-18074
GHSA-x84v-xcm2-53pg
PYSEC-2018-28
Summary The Requests package before 2.20.0 for Python sends an HTTP Authorization header to an http URI upon receiving a same-hostname https-to-http redirect, which makes it easier for remote attackers to discover credentials by sniffing the network.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-522 Insufficiently Protected Credentials
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
cvssv3.1 7.5 http://docs.python-requests.org/en/master/community/updates/#release-and-version-history
generic_textual HIGH http://docs.python-requests.org/en/master/community/updates/#release-and-version-history
cvssv3.1 7.5 http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00024.html
generic_textual HIGH http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00024.html
cvssv3.1 7.5 https://access.redhat.com/errata/RHSA-2019:2035
generic_textual HIGH https://access.redhat.com/errata/RHSA-2019:2035
cvssv3 2.6 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-18074.json
epss 0.00175 https://api.first.org/data/v1/epss?cve=CVE-2018-18074
epss 0.00175 https://api.first.org/data/v1/epss?cve=CVE-2018-18074
epss 0.00184 https://api.first.org/data/v1/epss?cve=CVE-2018-18074
epss 0.00184 https://api.first.org/data/v1/epss?cve=CVE-2018-18074
epss 0.00243 https://api.first.org/data/v1/epss?cve=CVE-2018-18074
epss 0.00243 https://api.first.org/data/v1/epss?cve=CVE-2018-18074
epss 0.00243 https://api.first.org/data/v1/epss?cve=CVE-2018-18074
epss 0.00243 https://api.first.org/data/v1/epss?cve=CVE-2018-18074
epss 0.00243 https://api.first.org/data/v1/epss?cve=CVE-2018-18074
epss 0.00243 https://api.first.org/data/v1/epss?cve=CVE-2018-18074
epss 0.00243 https://api.first.org/data/v1/epss?cve=CVE-2018-18074
epss 0.00243 https://api.first.org/data/v1/epss?cve=CVE-2018-18074
epss 0.00243 https://api.first.org/data/v1/epss?cve=CVE-2018-18074
epss 0.00243 https://api.first.org/data/v1/epss?cve=CVE-2018-18074
cvssv3.1 7.5 https://bugs.debian.org/910766
generic_textual HIGH https://bugs.debian.org/910766
cvssv3 5.9 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-x84v-xcm2-53pg
cvssv3.1 7.5 https://github.com/pypa/advisory-database/tree/main/vulns/requests/PYSEC-2018-28.yaml
generic_textual HIGH https://github.com/pypa/advisory-database/tree/main/vulns/requests/PYSEC-2018-28.yaml
cvssv3.1 7.5 https://github.com/requests/requests
generic_textual HIGH https://github.com/requests/requests
cvssv3.1 7.5 https://github.com/requests/requests/commit/c45d7c49ea75133e52ab22a8e9e13173938e36ff
generic_textual HIGH https://github.com/requests/requests/commit/c45d7c49ea75133e52ab22a8e9e13173938e36ff
cvssv3.1 7.5 https://github.com/requests/requests/issues/4716
generic_textual HIGH https://github.com/requests/requests/issues/4716
cvssv3.1 7.5 https://github.com/requests/requests/pull/4718
generic_textual HIGH https://github.com/requests/requests/pull/4718
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2018-18074
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2018-18074
cvssv3.1 7.5 https://usn.ubuntu.com/3790-1
generic_textual HIGH https://usn.ubuntu.com/3790-1
cvssv3.1 7.5 https://usn.ubuntu.com/3790-2
generic_textual HIGH https://usn.ubuntu.com/3790-2
cvssv3.1 7.5 https://www.oracle.com/security-alerts/cpujul2022.html
generic_textual HIGH https://www.oracle.com/security-alerts/cpujul2022.html
Reference id Reference type URL
http://docs.python-requests.org/en/master/community/updates/#release-and-version-history
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00024.html
https://access.redhat.com/errata/RHSA-2019:2035
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-18074.json
https://api.first.org/data/v1/epss?cve=CVE-2018-18074
https://bugs.debian.org/910766
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18074
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/advisories/GHSA-x84v-xcm2-53pg
https://github.com/pypa/advisory-database/tree/main/vulns/requests/PYSEC-2018-28.yaml
https://github.com/requests/requests
https://github.com/requests/requests/commit/c45d7c49ea75133e52ab22a8e9e13173938e36ff
https://github.com/requests/requests/issues/4716
https://github.com/requests/requests/pull/4718
https://usn.ubuntu.com/3790-1
https://usn.ubuntu.com/3790-1/
https://usn.ubuntu.com/3790-2
https://usn.ubuntu.com/3790-2/
https://www.oracle.com/security-alerts/cpujul2022.html
1643829 https://bugzilla.redhat.com/show_bug.cgi?id=1643829
910766 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=910766
CVE-2018-18074 https://nvd.nist.gov/vuln/detail/CVE-2018-18074
RHSA-2020:0850 https://access.redhat.com/errata/RHSA-2020:0850
RHSA-2020:0851 https://access.redhat.com/errata/RHSA-2020:0851
RHSA-2020:1605 https://access.redhat.com/errata/RHSA-2020:1605
RHSA-2020:1916 https://access.redhat.com/errata/RHSA-2020:1916
RHSA-2020:2068 https://access.redhat.com/errata/RHSA-2020:2068
RHSA-2020:2081 https://access.redhat.com/errata/RHSA-2020:2081
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at http://docs.python-requests.org/en/master/community/updates/#release-and-version-history
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00024.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://access.redhat.com/errata/RHSA-2019:2035
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-18074.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://bugs.debian.org/910766
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/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)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/pypa/advisory-database/tree/main/vulns/requests/PYSEC-2018-28.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/requests/requests
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/requests/requests/commit/c45d7c49ea75133e52ab22a8e9e13173938e36ff
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/requests/requests/issues/4716
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/requests/requests/pull/4718
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-18074
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://usn.ubuntu.com/3790-1
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://usn.ubuntu.com/3790-2
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://www.oracle.com/security-alerts/cpujul2022.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.38681
EPSS Score 0.00175
Published At April 26, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:41:50.455857+00:00 Pypa Importer Import https://github.com/pypa/advisory-database/blob/main/vulns/requests/PYSEC-2018-28.yaml 38.0.0