GHSA-39MM-RWM3-29JP

Vulnerability from github – Published: 2026-08-27 17:20 – Updated: 2026-08-27 17:20
VLAI
Summary
silverstripe-advancedworkflow vulnerable to remote code execution via advanced workflow email template
Details

Impact

The advanced workflow email template field is vulnerable to a specially crafted payload that can be used to run arbitrary code on the server.

Reported by

Steve Boyd Silverstripe Ltd.

Severity
7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "symbiote/silverstripe-advancedworkflow"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.4.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "symbiote/silverstripe-advancedworkflow"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.0.0"
            },
            {
              "fixed": "7.1.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "symbiote/silverstripe-advancedworkflow"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.2.0"
            },
            {
              "fixed": "7.2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-54718"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-1336"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-27T17:20:40Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Impact\nThe advanced workflow email template field is vulnerable to a specially crafted payload that can be used to run arbitrary code on the server.\n\n### Reported by\nSteve Boyd\nSilverstripe Ltd.",
  "id": "GHSA-39mm-rwm3-29jp",
  "modified": "2026-08-27T17:20:40Z",
  "published": "2026-08-27T17:20:40Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/security/advisories/GHSA-39mm-rwm3-29jp"
    },
    {
      "type": "WEB",
      "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/pull/629"
    },
    {
      "type": "WEB",
      "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/pull/630"
    },
    {
      "type": "WEB",
      "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/commit/28d0b536491e5c68b1c445579bdd1ddc8beaf8bb"
    },
    {
      "type": "WEB",
      "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/commit/f170766af992ed2ed3e5f21d127d0d0d3129678b"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/symbiote/silverstripe-advancedworkflow/CVE-2026-54718.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/silverstripe/silverstripe-advancedworkflow"
    },
    {
      "type": "WEB",
      "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/6.4.5"
    },
    {
      "type": "WEB",
      "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/7.1.3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/7.2.1"
    },
    {
      "type": "WEB",
      "url": "https://www.silverstripe.org/download/security-releases/cve-2026-54718"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "silverstripe-advancedworkflow vulnerable to remote code execution via advanced workflow email template"
}



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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

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.