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Vulnerability details: VCID-y32z-2d3f-gkgw
Vulnerability ID VCID-y32z-2d3f-gkgw
Aliases CVE-2021-32768
GHSA-c5c9-8c6m-727v
Summary Cross-site Scripting TYPO3 is vulnerable to cross-site scripting. Corresponding rendering instructions via TypoScript functionality HTMLparser does not consider all potentially malicious HTML tag & attribute combinations per default. In default scenarios, a valid backend user account is needed to exploit this vulnerability. In case custom plugins used in the website frontend accept and reflect rich-text content submitted by users, no authentication is required.
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-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
System Score Found at
epss 0.00284 https://api.first.org/data/v1/epss?cve=CVE-2021-32768
epss 0.00284 https://api.first.org/data/v1/epss?cve=CVE-2021-32768
epss 0.00284 https://api.first.org/data/v1/epss?cve=CVE-2021-32768
epss 0.00284 https://api.first.org/data/v1/epss?cve=CVE-2021-32768
epss 0.00284 https://api.first.org/data/v1/epss?cve=CVE-2021-32768
epss 0.00284 https://api.first.org/data/v1/epss?cve=CVE-2021-32768
epss 0.00284 https://api.first.org/data/v1/epss?cve=CVE-2021-32768
epss 0.00284 https://api.first.org/data/v1/epss?cve=CVE-2021-32768
epss 0.00284 https://api.first.org/data/v1/epss?cve=CVE-2021-32768
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-c5c9-8c6m-727v
cvssv3.1 6.1 https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-32768.yaml
generic_textual MODERATE https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-32768.yaml
cvssv3.1 6.1 https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-32768.yaml
generic_textual MODERATE https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-32768.yaml
cvssv3.1 6.1 https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-c5c9-8c6m-727v
cvssv3.1_qr MODERATE https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-c5c9-8c6m-727v
generic_textual MODERATE https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-c5c9-8c6m-727v
cvssv3.1 6.1 https://github.com/TYPO3/typo3/security/advisories/GHSA-c5c9-8c6m-727v
cvssv3.1_qr MODERATE https://github.com/TYPO3/typo3/security/advisories/GHSA-c5c9-8c6m-727v
generic_textual MODERATE https://github.com/TYPO3/typo3/security/advisories/GHSA-c5c9-8c6m-727v
cvssv3.1 6.1 https://nvd.nist.gov/vuln/detail/CVE-2021-32768
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2021-32768
cvssv3.1 6.1 https://typo3.org/security/advisory/typo3-core-sa-2021-013
generic_textual MODERATE https://typo3.org/security/advisory/typo3-core-sa-2021-013
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-32768
https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-32768.yaml
https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-32768.yaml
https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-c5c9-8c6m-727v
https://github.com/TYPO3/typo3/security/advisories/GHSA-c5c9-8c6m-727v
https://typo3.org/security/advisory/typo3-core-sa-2021-013
CVE-2021-32768 https://nvd.nist.gov/vuln/detail/CVE-2021-32768
GHSA-c5c9-8c6m-727v https://github.com/advisories/GHSA-c5c9-8c6m-727v
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/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-32768.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/typo3/cms/CVE-2021-32768.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/TYPO3/TYPO3.CMS/security/advisories/GHSA-c5c9-8c6m-727v
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/TYPO3/typo3/security/advisories/GHSA-c5c9-8c6m-727v
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-2021-32768
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://typo3.org/security/advisory/typo3-core-sa-2021-013
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 0.51722
EPSS Score 0.00284
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:48:38.965386+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/typo3/cms-core/CVE-2021-32768.yml 38.0.0