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Vulnerability details: VCID-tc2y-zrea-vyb2
Vulnerability ID VCID-tc2y-zrea-vyb2
Aliases CVE-2021-36150
GHSA-j66h-cc96-c32q
Summary Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') SilverStripe Framework suffers from a XSS vulnerablity.
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 0.00372 https://api.first.org/data/v1/epss?cve=CVE-2021-36150
epss 0.00372 https://api.first.org/data/v1/epss?cve=CVE-2021-36150
epss 0.00372 https://api.first.org/data/v1/epss?cve=CVE-2021-36150
epss 0.00372 https://api.first.org/data/v1/epss?cve=CVE-2021-36150
epss 0.00372 https://api.first.org/data/v1/epss?cve=CVE-2021-36150
epss 0.00372 https://api.first.org/data/v1/epss?cve=CVE-2021-36150
epss 0.00372 https://api.first.org/data/v1/epss?cve=CVE-2021-36150
epss 0.00372 https://api.first.org/data/v1/epss?cve=CVE-2021-36150
epss 0.00372 https://api.first.org/data/v1/epss?cve=CVE-2021-36150
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-j66h-cc96-c32q
cvssv3.1 6.1 https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/admin/CVE-2021-36150.yaml
generic_textual MODERATE https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/admin/CVE-2021-36150.yaml
cvssv3.1 6.1 https://github.com/silverstripe/silverstripe-framework
generic_textual MODERATE https://github.com/silverstripe/silverstripe-framework
cvssv3.1 6.1 https://github.com/silverstripe/silverstripe-framework/releases
generic_textual MODERATE https://github.com/silverstripe/silverstripe-framework/releases
cvssv3.1 6.1 https://nvd.nist.gov/vuln/detail/CVE-2021-36150
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2021-36150
cvssv3.1 6.1 https://www.silverstripe.org/download/security-releases/CVE-2021-36150
generic_textual MODERATE https://www.silverstripe.org/download/security-releases/CVE-2021-36150
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-36150
https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/admin/CVE-2021-36150.yaml
https://github.com/silverstripe/silverstripe-framework
https://github.com/silverstripe/silverstripe-framework/releases
CVE-2021-36150 https://nvd.nist.gov/vuln/detail/CVE-2021-36150
CVE-2021-36150 https://www.silverstripe.org/download/security-releases/CVE-2021-36150
GHSA-j66h-cc96-c32q https://github.com/advisories/GHSA-j66h-cc96-c32q
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/silverstripe/admin/CVE-2021-36150.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/silverstripe/silverstripe-framework
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/silverstripe/silverstripe-framework/releases
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-2021-36150
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.silverstripe.org/download/security-releases/CVE-2021-36150
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 0.58857
EPSS Score 0.00372
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:48:54.479550+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/silverstripe/secureassets/CVE-2021-36150.yml 38.0.0