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Vulnerability details: VCID-v92t-hba5-9uec
Vulnerability ID VCID-v92t-hba5-9uec
Aliases CVE-2021-32667
GHSA-8mq9-fqv8-59wf
Summary Cross-Site Scripting in Page Preview > ### Meta > * CVSS: `CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC` (5.0) ### Problem Failing to properly encode _Page TSconfig_ settings, corresponding page preview module (_Web>View_) is vulnerable to persistent cross-site scripting. A valid backend user account is needed to exploit this vulnerability. ### Solution Update to TYPO3 versions 9.5.28, 10.4.18, 11.3.1 that fix the problem described. ### Credits Thanks to TYPO3 core merger Oliver Bartsch who reported and fixed the issue. ### References * [TYPO3-CORE-SA-2021-009](https://typo3.org/security/advisory/typo3-core-sa-2021-009)
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
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
System Score Found at
epss 0.00689 https://api.first.org/data/v1/epss?cve=CVE-2021-32667
cvssv3.1 6.4 https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-32667.yaml
generic_textual MODERATE https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-32667.yaml
cvssv3.1 6.4 https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-32667.yaml
generic_textual MODERATE https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-32667.yaml
cvssv3.1 6.4 https://github.com/TYPO3/typo3
generic_textual MODERATE https://github.com/TYPO3/typo3
cvssv3.1 6.4 https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-8mq9-fqv8-59wf
generic_textual MODERATE https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-8mq9-fqv8-59wf
cvssv3.1 6.4 https://github.com/TYPO3/typo3/security/advisories/GHSA-8mq9-fqv8-59wf
generic_textual MODERATE https://github.com/TYPO3/typo3/security/advisories/GHSA-8mq9-fqv8-59wf
cvssv2 3.5 https://nvd.nist.gov/vuln/detail/CVE-2021-32667
cvssv3.1 5.4 https://nvd.nist.gov/vuln/detail/CVE-2021-32667
cvssv3.1 6.4 https://nvd.nist.gov/vuln/detail/CVE-2021-32667
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2021-32667
cvssv3.1 6.4 https://typo3.org/security/advisory/typo3-core-sa-2021-009
generic_textual MODERATE https://typo3.org/security/advisory/typo3-core-sa-2021-009
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-32667
https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-32667.yaml
https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-32667.yaml
https://github.com/TYPO3/typo3
https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-8mq9-fqv8-59wf
https://github.com/TYPO3/typo3/security/advisories/GHSA-8mq9-fqv8-59wf
https://nvd.nist.gov/vuln/detail/CVE-2021-32667
https://typo3.org/security/advisory/typo3-core-sa-2021-009
cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-32667.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:H/PR:L/UI:R/S:U/C:H/I:H/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-32667.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:H/PR:L/UI:R/S:U/C:H/I:H/A:N Found at https://github.com/TYPO3/typo3
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:H/PR:L/UI:R/S:U/C:H/I:H/A:N Found at https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-8mq9-fqv8-59wf
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:H/PR:L/UI:R/S:U/C:H/I:H/A:N Found at https://github.com/TYPO3/typo3/security/advisories/GHSA-8mq9-fqv8-59wf
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: AV:N/AC:M/Au:S/C:N/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-32667
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-32667
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:H/PR:L/UI:R/S:U/C:H/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-32667
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:H/PR:L/UI:R/S:U/C:H/I:H/A:N Found at https://typo3.org/security/advisory/typo3-core-sa-2021-009
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 0.70782
EPSS Score 0.00689
Published At June 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-01T12:19:31.325965+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/07/GHSA-8mq9-fqv8-59wf/GHSA-8mq9-fqv8-59wf.json 36.1.3