Vulnerability-Lookup

GHSA-H784-HPJP-2RRM

Vulnerability from github – Published: 2026-08-11 15:32 – Updated: 2026-09-01 21:04

Summary

Duplicate Advisory: Craft CMS: Authenticated RCE through Twig sandbox escape

Details

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-f5wm-88jv-g5hx. This link is maintained to preserve external references.

Original Description

Craft CMS versions >= 5.0.0-RC1 before 5.10.7 and >= 4.0.0-RC1 before 4.18.3 contain a remote code execution vulnerability in the Twig sandbox mechanism. Because Craft marks the ElementInterface as safe (via the AllowedInSandbox attribute) and the sandbox allowlisting extends to the entire class hierarchy (craft\base\Component up to yii\base\Component), an authenticated attacker with permission to access the control panel can render a malicious Twig template that abuses the yii\base\Component arbitrary function-call gadget to execute arbitrary code, even when the Twig sandbox is enabled via enableTwigSandbox().

Severity

8.8 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

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JSON

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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c 4.18.3"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "craftcms/cms"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.0.0-RC1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-693"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-01T21:04:05Z",
    "nvd_published_at": "2026-08-11T13:19:08Z",
    "severity": "HIGH"
  },
  "details": "## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of\u00a0GHSA-f5wm-88jv-g5hx. This link is maintained to preserve external references.\n\n## Original Description\nCraft CMS versions \u003e= 5.0.0-RC1 before 5.10.7 and \u003e= 4.0.0-RC1 before 4.18.3 contain a remote code execution vulnerability in the Twig sandbox mechanism. Because Craft marks the ElementInterface as safe (via the AllowedInSandbox attribute) and the sandbox allowlisting extends to the entire class hierarchy (craft\\base\\Component up to yii\\base\\Component), an authenticated attacker with permission to access the control panel can render a malicious Twig template that abuses the yii\\base\\Component arbitrary function-call gadget to execute arbitrary code, even when the Twig sandbox is enabled via enableTwigSandbox().",
  "id": "GHSA-h784-hpjp-2rrm",
  "modified": "2026-09-01T21:04:05Z",
  "published": "2026-08-11T15:32:39Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/craftcms/cms/security/advisories/GHSA-f5wm-88jv-g5hx"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72781"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/craft-cms-rc1-before-remote-code-execution-via-twig-sandbox-escape"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "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/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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Duplicate Advisory: Craft CMS: Authenticated RCE through Twig sandbox escape",
  "withdrawn": "2026-09-01T21:04:05Z"
}

CVE-2026-72781 (GCVE-0-2026-72781)

Vulnerability from cvelistv5 – Published: 2026-08-11 12:17 – Updated: 2026-08-11 14:01

Title

Craft CMS 5.0.0-RC1 before 5.10.7 Remote Code Execution via Twig Sandbox Escape

Summary

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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-11 14:01 UTC

CWE

CWE-693 - Protection Mechanism Failure

Assigner

VulnCheck mitre root

References

2 references

URL	Tags
https://github.com/craftcms/cms/security/advisori…	vendor-advisory
https://www.vulncheck.com/advisories/craft-cms-rc…	third-party-advisory

Impacted products

2 products

Vendor	Product	Version
craftcms	cms	Affected: 5.0.0-RC1 , < 5.10.7 (semver) Unaffected: 5.10.7 (semver)
craftcms	cms	Affected: 4.0.0-RC1 , < 4.18.3 (semver) Unaffected: 4.18.3 (semver)

Date Public

2026-07-25 00:00

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-72781",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-11T14:01:20.422669Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "cms",
          "vendor": "craftcms",
          "versions": [
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              "lessThan": "5.10.7",
              "status": "affected",
              "version": "5.0.0-RC1",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.7",
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            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "cms",
          "vendor": "craftcms",
          "versions": [
            {
              "lessThan": "4.18.3",
              "status": "affected",
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              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.18.3",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*",
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                }
              ],
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        },
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      ],
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      "descriptions": [
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
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            "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",
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            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS"
        },
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            "scope": "UNCHANGED",
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          "tags": [
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    "dateReserved": "2026-08-10T15:09:12.955Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.