CVE-2026-56393
published 2026-06-21CVE-2026-56393: Craft CMS 4.x (>= 4.0.0-RC1, = 5.0.0-RC1, < 5.9.0-beta.1) contain multiple stored cross-site scripting vulnerabilities where settings names and field option…
PriorityP422medium4.8CVSS 3.1
AVNACLPRHUIRSCCLILAN
EPSS
0.18%
8.1th percentile
Craft CMS 4.x (>= 4.0.0-RC1, = 5.0.0-RC1, < 5.9.0-beta.1) contain multiple stored cross-site scripting vulnerabilities where settings names and field option labels are rendered without sanitization (e.g., via the checkbox.twig template, which used {{ label|raw }}). An authenticated administrator (with allowAdminChanges enabled) can inject malicious payloads into section names, volume names, user group names, global set names, generated field names, checkbox/radio option labels, and custom source labels, causing arbitrary JavaScript to execute in other users' control-panel sessions. Fixed in 4.17.0-beta.1 and 5.9.0-beta.1.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| craftcms | cms | >= 4.0.0-RC1 < 4.17.0-beta.1 | 4.17.0-beta.1 |
| craftcms | cms | >= 5.0.0-RC1 < 5.9.0-beta.1 | 5.9.0-beta.1 |
CVSS provenance
nvdv3.14.8MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
nvdv4.04.6MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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VulDB
Craft CMS up to 4.17.0-beta.0/5.9.0-beta.0 Setting cross site scripting (GHSA-4mgv-366x-qxvx / EUVD-2026-38159)
vuldb·2026-06-21·CVSS 4.8
CVE-2026-56393 [MEDIUM] Craft CMS up to 4.17.0-beta.0/5.9.0-beta.0 Setting cross site scripting (GHSA-4mgv-366x-qxvx / EUVD-2026-38159)
A vulnerability marked as problematic has been reported in Craft CMS up to 4.17.0-beta.0/5.9.0-beta.0. Affected is an unknown function of the component Setting Handler. The manipulation leads to cross site scripting.
This vulnerability is referenced as CVE-2026-56393. Remote exploitation of the attack is possible. No exploit is available.
It is suggested to upgrade the affected component.
GHSA
Craft CMS 4.x (>= 4.0.0-RC1, < 4.17.0-beta.1) and 5.x (>= 5.0.0-RC1, < 5.9.0-beta.1) contain multiple stored cross-site scripting vulnerabilities where settings names and field option labels are rende
ghsa_unreviewed·2026-06-21
CVE-2026-56393 [MEDIUM] CWE-79 Craft CMS 4.x (>= 4.0.0-RC1, < 4.17.0-beta.1) and 5.x (>= 5.0.0-RC1, < 5.9.0-beta.1) contain multiple stored cross-site scripting vulnerabilities where settings names and field option labels are rende
Craft CMS 4.x (>= 4.0.0-RC1, = 5.0.0-RC1, < 5.9.0-beta.1) contain multiple stored cross-site scripting vulnerabilities where settings names and field option labels are rendered without sanitization (e.g., via the checkbox.twig template, which used {{ label|raw }}). An authenticated administrator (with allowAdminChanges enabled) can inject malicious payloads into section names, volume names, user group names, global set names, generated field names, checkbox/radio option labels, and custom source labels, causing arbitrary JavaScript to execute in other users' control-panel sessions. Fixed in 4.17.0-beta.1 and 5.9.0-beta.1.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://github.com/craftcms/cms/commit/67780a778c6ec04e68e64a0b1177c168306144a2https://github.com/craftcms/cms/commit/943152d2246b36f12adf161a03b8695b773d9276https://github.com/craftcms/cms/security/advisories/GHSA-4mgv-366x-qxvxhttps://www.vulncheck.com/advisories/craft-cms-multiple-stored-cross-site-scripting-in-settings-names-and-field-optionshttps://github.com/craftcms/cms/security/advisories/GHSA-4mgv-366x-qxvx
2026-06-21
Published