CVE-2026-124430 (GCVE-0-2026-124430)

Vulnerability from cvelistv5 – Published: 2026-11-08 13:15 – Updated: 2026-11-08 13:15
VLAI
Title
Craft CMS 5.10.0 before 5.11.2 RCE via app/render-elements Signing Oracle
Summary
Craft CMS from 5.10.0 before 5.11.2 contains a remote code execution vulnerability that allows non-administrator control panel users to obtain HMAC-signed Twig templates via the app/render-elements endpoint. Attackers can submit the signed templated returnUrl as the login redirect parameter, triggering unsandboxed renderObjectTemplate() evaluation and executing OS commands as the PHP worker.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
craftcms cms Affected: 5.10.0 , < 5.11.2 (semver)
Unaffected: 5.11.2 (semver)
    cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-23 00:00
Credits
0xkalawy
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "cms",
          "vendor": "craftcms",
          "versions": [
            {
              "lessThan": "5.11.2",
              "status": "affected",
              "version": "5.10.0",
              "versionType": "semver"
            },
            {
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              "version": "5.11.2",
              "versionType": "semver"
            }
          ]
        }
      ],
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          "type": "finder",
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      "datePublic": "2026-10-23T00:00:00.000Z",
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
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            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1336",
              "description": "Improper Neutralization of Special Elements Used in a Template Engine",
              "lang": "en",
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            }
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      "providerMetadata": {
        "dateUpdated": "2026-11-08T13:15:26.712Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "GitHub Security Advisory (GHSA-qj3q-j7r4-428p)",
          "tags": [
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          ],
          "url": "https://github.com/craftcms/cms/security/advisories/GHSA-qj3q-j7r4-428p"
        },
        {
          "name": "VulnCheck Advisory: Craft CMS 5.10.0 before 5.11.2 RCE via app/render-elements Signing Oracle",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/craft-cms-5.10.0-before-5.11.2-rce-via-app-render-elements-signing-oracle"
        }
      ],
      "title": "Craft CMS 5.10.0 before 5.11.2 RCE via app/render-elements Signing Oracle",
      "x_generator": {
        "engine": "vulncheck-endgame"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-124430",
    "datePublished": "2026-11-08T13:15:26.712Z",
    "dateReserved": "2026-11-08T02:12:19.300Z",
    "dateUpdated": "2026-11-08T13:15:26.712Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}



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