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  5. CVE-2026-54718

CVE-2026-54718: silverstripe-advancedworkflow vulnerable to remote code execution via advanced workflow email template

August 27, 2026

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

References

  • github.com/FriendsOfPHP/security-advisories/blob/master/symbiote/silverstripe-advancedworkflow/CVE-2026-54718.yaml
  • github.com/advisories/GHSA-39mm-rwm3-29jp
  • github.com/silverstripe/silverstripe-advancedworkflow/commit/28d0b536491e5c68b1c445579bdd1ddc8beaf8bb
  • github.com/silverstripe/silverstripe-advancedworkflow/commit/f170766af992ed2ed3e5f21d127d0d0d3129678b
  • github.com/silverstripe/silverstripe-advancedworkflow/pull/629
  • github.com/silverstripe/silverstripe-advancedworkflow/pull/630
  • github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/6.4.5
  • github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/7.1.3
  • github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/7.2.1
  • github.com/silverstripe/silverstripe-advancedworkflow/security/advisories/GHSA-39mm-rwm3-29jp
  • nvd.nist.gov/vuln/detail/CVE-2026-54718
  • www.silverstripe.org/download/security-releases/cve-2026-54718

Code Behaviors & Features

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Affected versions

All versions before 6.4.5, all versions starting from 7.0.0 before 7.1.3, all versions starting from 7.2.0 before 7.2.1

Fixed versions

  • 6.4.5
  • 7.1.3
  • 7.2.1

Solution

Upgrade to versions 6.4.5, 7.1.3, 7.2.1 or above.

Impact 7.2 HIGH

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

Learn more about CVSS

Weakness

  • CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine
  • CWE-20: Improper Input Validation

Source file

packagist/symbiote/silverstripe-advancedworkflow/CVE-2026-54718.yml

Spotted a mistake? Edit the file on GitLab.

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