CVE-2026-56393 (GCVE-0-2026-56393)

Vulnerability from cvelistv5 – Published: 2026-06-21 13:27 – Updated: 2026-06-21 13:27
VLAI
Title
Craft CMS - Multiple Stored Cross-Site Scripting in Settings Names and Field Options
Summary
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 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.
Severity
4.6 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
4.8 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
Vendor Product Version
craftcms cms Affected: 5.0.0-RC1 , < 5.9.0-beta.1 (semver)
Unaffected: 5.9.0-beta.1 (semver)
Affected: 4.0.0-RC1 , < 4.17.0-beta.1 (semver)
Unaffected: 4.17.0-beta.1 (semver)
Create a notification for this product.
Date Public
2026-03-02 00:00
Credits
mHe4am
Show details on NVD website
To clipboard 

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          "product": "cms",
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      "credits": [
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          "type": "reporter",
          "value": "mHe4am"
        }
      ],
      "datePublic": "2026-03-02T00:00:00.000Z",
      "descriptions": [
        {
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        }
      ],
      "metrics": [
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            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 4.6,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "HIGH",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "ACTIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
            "version": "4.0",
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            "vulnerabilityResponseEffort": "NOT_DEFINED"
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            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
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            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
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      "problemTypes": [
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          "descriptions": [
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              "cweId": "CWE-79",
              "description": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
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      "providerMetadata": {
        "dateUpdated": "2026-06-21T13:27:01.755Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
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      "references": [
        {
          "name": "GHSA Advisory GHSA-4mgv-366x-qxvx",
          "tags": [
            "vendor-advisory"
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          "url": "https://github.com/craftcms/cms/security/advisories/GHSA-4mgv-366x-qxvx"
        },
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          "tags": [
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        },
        {
          "name": "VulnCheck Advisory: Craft CMS - Multiple Stored Cross-Site Scripting in Settings Names and Field Options",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/craft-cms-multiple-stored-cross-site-scripting-in-settings-names-and-field-options"
        }
      ],
      "title": "Craft CMS - Multiple Stored Cross-Site Scripting in Settings Names and Field Options",
      "x_generator": {
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-56393",
    "datePublished": "2026-06-21T13:27:01.755Z",
    "dateReserved": "2026-06-21T12:37:58.434Z",
    "dateUpdated": "2026-06-21T13:27:01.755Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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