Vulnerability-Lookup

GHSA-8WG7-WM29-2RVG

Vulnerability from github – Published: 2026-03-16 18:11 – Updated: 2026-03-16 21:57

Summary

RCE via SSTI for users with permissions to access the Craft CMS Webhooks plugin

Details

The Webhooks plugin renders user-supplied template content through Twig’s renderString() function without sandbox protection. This allows an authenticated user with access to the Craft control panel and permissions to access the Webhooks plugin to inject Twig template code that calls arbitrary PHP functions.

This is possible even if allowAdminChanges is set to false.

Affected users should update to version 3.2.0 to mitigate the issue.

Severity

8.5 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "craftcms/webhooks"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0"
            },
            {
              "fixed": "3.2.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-32261"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1336"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-16T18:11:23Z",
    "nvd_published_at": "2026-03-16T19:16:17Z",
    "severity": "HIGH"
  },
  "details": "The Webhooks plugin renders user-supplied template content through Twig\u2019s `renderString()` function without sandbox protection. This allows an authenticated user with access to the Craft control panel and permissions to access the Webhooks plugin to inject Twig template code that calls arbitrary PHP functions.\n\nThis is possible even if `allowAdminChanges` is set to `false`.\n\nAffected users should update to version 3.2.0 to mitigate the issue.",
  "id": "GHSA-8wg7-wm29-2rvg",
  "modified": "2026-03-16T21:57:13Z",
  "published": "2026-03-16T18:11:23Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/craftcms/webhooks/security/advisories/GHSA-8wg7-wm29-2rvg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32261"
    },
    {
      "type": "WEB",
      "url": "https://github.com/craftcms/webhooks/commit/88344991a68b07145567c46dfd0ae3328c521f62"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/craftcms/webhooks"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "RCE via SSTI for users with permissions to access the Craft CMS Webhooks plugin"
}

CVE-2026-32261 (GCVE-0-2026-32261)

Vulnerability from cvelistv5 – Published: 2026-03-16 18:50 – Updated: 2026-03-16 19:27

Title

RCE via SSTI for users with permissions to access the Craft CMS Webhooks plugin

Summary

Webhooks for Craft CMS plugin adds the ability to manage “webhooks” in Craft CMS, which will send GET or POST requests when certain events occur. From version 3.0.0 to before version 3.2.0, the Webhooks plugin renders user-supplied template content through Twig’s renderString() function without sandbox protection. This allows an authenticated user with access to the Craft control panel and permissions to access the Webhooks plugin to inject Twig template code that calls arbitrary PHP functions. This is possible even if allowAdminChanges is set to false. This issue has been patched in version 3.2.0.

Severity

8.5 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine

Assigner

GitHub_M

References

2 references

URL	Tags
https://github.com/craftcms/webhooks/security/adv…	x_refsource_CONFIRM
https://github.com/craftcms/webhooks/commit/88344…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
craftcms	webhooks	Affected: >= 3.0.0, < 3.2.0

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-32261",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-16T19:26:49.954134Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-16T19:27:05.370Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "webhooks",
          "vendor": "craftcms",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 3.0.0, \u003c 3.2.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Webhooks for Craft CMS plugin adds the ability to manage \u201cwebhooks\u201d in Craft CMS, which will send GET or POST requests when certain events occur. From version 3.0.0 to before version 3.2.0, the Webhooks plugin renders user-supplied template content through Twig\u2019s renderString() function without sandbox protection. This allows an authenticated user with access to the Craft control panel and permissions to access the Webhooks plugin to inject Twig template code that calls arbitrary PHP functions. This is possible even if allowAdminChanges is set to false. This issue has been patched in version 3.2.0."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.5,
            "baseSeverity": "HIGH",
            "privilegesRequired": "HIGH",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1336",
              "description": "CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-16T18:50:18.158Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/craftcms/webhooks/security/advisories/GHSA-8wg7-wm29-2rvg",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/craftcms/webhooks/security/advisories/GHSA-8wg7-wm29-2rvg"
        },
        {
          "name": "https://github.com/craftcms/webhooks/commit/88344991a68b07145567c46dfd0ae3328c521f62",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/craftcms/webhooks/commit/88344991a68b07145567c46dfd0ae3328c521f62"
        }
      ],
      "source": {
        "advisory": "GHSA-8wg7-wm29-2rvg",
        "discovery": "UNKNOWN"
      },
      "title": "RCE via SSTI for users with permissions to access the Craft CMS Webhooks plugin"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-32261",
    "datePublished": "2026-03-16T18:50:18.158Z",
    "dateReserved": "2026-03-11T15:05:48.397Z",
    "dateUpdated": "2026-03-16T19:27:05.370Z",
    "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.

Action not permitted

GHSA-8WG7-WM29-2RVG

CVE-2026-32261 (GCVE-0-2026-32261)

Tags

Sightings

Nomenclature