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Vulnerability details: VCID-ww44-hb2y-mfd5
Vulnerability ID VCID-ww44-hb2y-mfd5
Aliases CVE-2020-13668
GHSA-m6q5-wv4x-fv6h
Summary Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Access Bypass vulnerability in Drupal Core allows for an attacker to leverage the way that HTML is rendered for affected forms in order to exploit the vulnerability. This issue affects: Drupal Core 8.8.x versions prior to 8.8.10; 8.9.x versions prior to 8.9.6; 9.0.x versions prior to 9.0.6.
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-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00223 https://api.first.org/data/v1/epss?cve=CVE-2020-13668
epss 0.00223 https://api.first.org/data/v1/epss?cve=CVE-2020-13668
epss 0.00223 https://api.first.org/data/v1/epss?cve=CVE-2020-13668
epss 0.00223 https://api.first.org/data/v1/epss?cve=CVE-2020-13668
epss 0.00223 https://api.first.org/data/v1/epss?cve=CVE-2020-13668
epss 0.00223 https://api.first.org/data/v1/epss?cve=CVE-2020-13668
epss 0.00223 https://api.first.org/data/v1/epss?cve=CVE-2020-13668
epss 0.00223 https://api.first.org/data/v1/epss?cve=CVE-2020-13668
epss 0.00223 https://api.first.org/data/v1/epss?cve=CVE-2020-13668
epss 0.00223 https://api.first.org/data/v1/epss?cve=CVE-2020-13668
epss 0.00223 https://api.first.org/data/v1/epss?cve=CVE-2020-13668
epss 0.00223 https://api.first.org/data/v1/epss?cve=CVE-2020-13668
epss 0.00223 https://api.first.org/data/v1/epss?cve=CVE-2020-13668
epss 0.00223 https://api.first.org/data/v1/epss?cve=CVE-2020-13668
epss 0.00223 https://api.first.org/data/v1/epss?cve=CVE-2020-13668
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-m6q5-wv4x-fv6h
cvssv3.1 6.1 https://github.com/drupal/core
generic_textual MODERATE https://github.com/drupal/core
cvssv3.1 6.1 https://github.com/drupal/core/commit/3184fa4b2f3b65b44884b5e858cdc7794d34b4c8
generic_textual MODERATE https://github.com/drupal/core/commit/3184fa4b2f3b65b44884b5e858cdc7794d34b4c8
cvssv3.1 6.1 https://github.com/drupal/core/commit/58330ba58d1ac6f1a0a549e8dbde8a3e094bf4fb
generic_textual MODERATE https://github.com/drupal/core/commit/58330ba58d1ac6f1a0a549e8dbde8a3e094bf4fb
cvssv3.1 6.1 https://github.com/drupal/core/commit/d4be028d81fb6b067513d788b60c3e6fc8fbd0a2
generic_textual MODERATE https://github.com/drupal/core/commit/d4be028d81fb6b067513d788b60c3e6fc8fbd0a2
cvssv3.1 6.1 https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13668.yaml
generic_textual MODERATE https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13668.yaml
cvssv3.1 6.1 https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13668.yaml
generic_textual MODERATE https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13668.yaml
cvssv3.1 6.1 https://nvd.nist.gov/vuln/detail/CVE-2020-13668
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2020-13668
cvssv3.1 6.1 https://www.drupal.org/sa-core-2020-009
generic_textual MODERATE https://www.drupal.org/sa-core-2020-009
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2020-13668
https://github.com/drupal/core
https://github.com/drupal/core/commit/3184fa4b2f3b65b44884b5e858cdc7794d34b4c8
https://github.com/drupal/core/commit/58330ba58d1ac6f1a0a549e8dbde8a3e094bf4fb
https://github.com/drupal/core/commit/d4be028d81fb6b067513d788b60c3e6fc8fbd0a2
https://www.drupal.org/sa-core-2020-009
CVE-2020-13668 https://nvd.nist.gov/vuln/detail/CVE-2020-13668
CVE-2020-13668.YAML https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13668.yaml
CVE-2020-13668.YAML https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13668.yaml
GHSA-m6q5-wv4x-fv6h https://github.com/advisories/GHSA-m6q5-wv4x-fv6h
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/drupal/core/commit/3184fa4b2f3b65b44884b5e858cdc7794d34b4c8
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:R/S:C/C:L/I:L/A:N Found at https://github.com/drupal/core/commit/58330ba58d1ac6f1a0a549e8dbde8a3e094bf4fb
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:R/S:C/C:L/I:L/A:N Found at https://github.com/drupal/core/commit/d4be028d81fb6b067513d788b60c3e6fc8fbd0a2
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:R/S:C/C:L/I:L/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2020-13668.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:R/S:C/C:L/I:L/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2020-13668.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:R/S:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-13668
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:R/S:C/C:L/I:L/A:N Found at https://www.drupal.org/sa-core-2020-009
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 0.44824
EPSS Score 0.00223
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:49:33.680461+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/drupal/core/CVE-2020-13668.yml 38.0.0