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Vulnerability details: VCID-x1w2-ytck-17bn
Vulnerability ID VCID-x1w2-ytck-17bn
Aliases CVE-2026-28784
GHSA-qc86-q28f-ggww
Summary Craft is a content management system (CMS). Prior to 5.8.22 and 4.16.18, it is possible to craft a malicious payload using the Twig map filter in text fields that accept Twig input under Settings in the Craft control panel or using the System Messages utility, which could lead to a RCE. For this to work, you must have administrator access to the Craft Control Panel, and allowAdminChanges must be enabled for this to work, which is against our recommendations for any non-dev environment. Alternatively, you can have a non-administrator account with allowAdminChanges disabled, but you have access to the System Messages utility. Users should update to the patched versions (5.8.22 and 4.16.18) to mitigate the issue.
Status Published
Exploitability 0.5
Weighted Severity 7.7
Risk 3.9
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1336 Improper Neutralization of Special Elements Used in a Template Engine
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00021 https://api.first.org/data/v1/epss?cve=CVE-2026-28784
epss 0.00021 https://api.first.org/data/v1/epss?cve=CVE-2026-28784
epss 0.00021 https://api.first.org/data/v1/epss?cve=CVE-2026-28784
cvssv4 6.1 https://craftcms.com/knowledge-base/securing-craft#set-allowAdminChanges-to-false-in-production
cvssv4 8.6 https://craftcms.com/knowledge-base/securing-craft#set-allowAdminChanges-to-false-in-production
generic_textual MODERATE https://craftcms.com/knowledge-base/securing-craft#set-allowAdminChanges-to-false-in-production
ssvc Track https://craftcms.com/knowledge-base/securing-craft#set-allowAdminChanges-to-false-in-production
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-qc86-q28f-ggww
cvssv4 6.1 https://github.com/craftcms/cms
generic_textual MODERATE https://github.com/craftcms/cms
cvssv4 6.1 https://github.com/craftcms/cms/pull/18208
cvssv4 8.6 https://github.com/craftcms/cms/pull/18208
generic_textual MODERATE https://github.com/craftcms/cms/pull/18208
ssvc Track https://github.com/craftcms/cms/pull/18208
cvssv3.1_qr MODERATE https://github.com/craftcms/cms/security/advisories/GHSA-qc86-q28f-ggww
cvssv4 6.1 https://github.com/craftcms/cms/security/advisories/GHSA-qc86-q28f-ggww
cvssv4 8.6 https://github.com/craftcms/cms/security/advisories/GHSA-qc86-q28f-ggww
generic_textual MODERATE https://github.com/craftcms/cms/security/advisories/GHSA-qc86-q28f-ggww
ssvc Track https://github.com/craftcms/cms/security/advisories/GHSA-qc86-q28f-ggww
cvssv4 6.1 https://nvd.nist.gov/vuln/detail/CVE-2026-28784
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2026-28784
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-28784
18208 https://github.com/craftcms/cms/pull/18208
CVE-2026-28784 https://nvd.nist.gov/vuln/detail/CVE-2026-28784
GHSA-qc86-q28f-ggww https://github.com/advisories/GHSA-qc86-q28f-ggww
GHSA-qc86-q28f-ggww https://github.com/craftcms/cms/security/advisories/GHSA-qc86-q28f-ggww
securing-craft#set-allowAdminChanges-to-false-in-production https://craftcms.com/knowledge-base/securing-craft#set-allowAdminChanges-to-false-in-production
No exploits are available.
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U Found at https://craftcms.com/knowledge-base/securing-craft#set-allowAdminChanges-to-false-in-production
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N Found at https://craftcms.com/knowledge-base/securing-craft#set-allowAdminChanges-to-false-in-production
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-03-04T17:32:46Z/ Found at https://craftcms.com/knowledge-base/securing-craft#set-allowAdminChanges-to-false-in-production
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U Found at https://github.com/craftcms/cms
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U Found at https://github.com/craftcms/cms/pull/18208
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N Found at https://github.com/craftcms/cms/pull/18208
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-03-04T17:32:46Z/ Found at https://github.com/craftcms/cms/pull/18208
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U Found at https://github.com/craftcms/cms/security/advisories/GHSA-qc86-q28f-ggww
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N Found at https://github.com/craftcms/cms/security/advisories/GHSA-qc86-q28f-ggww
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

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Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-03-04T17:32:46Z/ Found at https://github.com/craftcms/cms/security/advisories/GHSA-qc86-q28f-ggww
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U Found at https://nvd.nist.gov/vuln/detail/CVE-2026-28784
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Exploit Prediction Scoring System (EPSS)
Percentile 0.06182
EPSS Score 0.00021
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T16:43:50.067031+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2026/28xxx/CVE-2026-28784.json 38.6.0