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Vulnerability details: VCID-kwe1-gm4m-tkgf
Vulnerability ID VCID-kwe1-gm4m-tkgf
Aliases CVE-2016-9451
GHSA-66gr-xrcf-8jpq
Summary URL Redirection to Untrusted Site (Open Redirect) Confirmation forms in Drupal make it easier for remote authenticated users to conduct open redirect attacks via unspecified vectors.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-601 URL Redirection to Untrusted Site ('Open Redirect')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2016-9451
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2016-9451
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2016-9451
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2016-9451
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2016-9451
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2016-9451
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2016-9451
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2016-9451
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2016-9451
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2016-9451
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-66gr-xrcf-8jpq
cvssv3.1 6.8 https://github.com/drupal/core
generic_textual MODERATE https://github.com/drupal/core
cvssv3.1 6.8 https://nvd.nist.gov/vuln/detail/CVE-2016-9451
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2016-9451
archlinux Medium https://security.archlinux.org/AVG-75
cvssv3.1 6.8 https://www.drupal.org/SA-CORE-2016-005
generic_textual MODERATE https://www.drupal.org/SA-CORE-2016-005
cvssv3.1 6.8 http://www.debian.org/security/2016/dsa-3718
generic_textual MODERATE http://www.debian.org/security/2016/dsa-3718
cvssv3.1 6.8 http://www.securityfocus.com/bid/94367
generic_textual MODERATE http://www.securityfocus.com/bid/94367
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2016-9451
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9449
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9451
https://github.com/drupal/core
https://www.drupal.org/SA-CORE-2016-005
http://www.debian.org/security/2016/dsa-3718
http://www.securityfocus.com/bid/94367
AVG-75 https://security.archlinux.org/AVG-75
CVE-2016-9451 https://nvd.nist.gov/vuln/detail/CVE-2016-9451
GHSA-66gr-xrcf-8jpq https://github.com/advisories/GHSA-66gr-xrcf-8jpq
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N Found at https://github.com/drupal/core
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:L/PR:L/UI:R/S:C/C:N/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2016-9451
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:L/PR:L/UI:R/S:C/C:N/I:H/A:N Found at https://www.drupal.org/SA-CORE-2016-005
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:L/PR:L/UI:R/S:C/C:N/I:H/A:N Found at http://www.debian.org/security/2016/dsa-3718
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:L/PR:L/UI:R/S:C/C:N/I:H/A:N Found at http://www.securityfocus.com/bid/94367
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 0.30779
EPSS Score 0.00119
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:47:07.169106+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/drupal/core/CVE-2016-9451.yml 38.0.0