GHSA-39mm-rwm3-29jp: Input Validation

Published Aug 27, 2026
·
Updated

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.

Affected Software

3 affected componentsFixes available
composer/symbiote/silverstripe-advancedworkflow>=7.2.0<7.2.1
7.2.1
composer/symbiote/silverstripe-advancedworkflow>=7.0.0<7.1.3
7.1.3
composer/symbiote/silverstripe-advancedworkflow<6.4.5
6.4.5

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade composer/symbiote/silverstripe-advancedworkflow to a version that resolves this vulnerability.

    Fixed in 7.2.1
  2. Upgrade

    Upgrade composer/symbiote/silverstripe-advancedworkflow to a version that resolves this vulnerability.

    Fixed in 7.1.3
  3. Upgrade

    Upgrade composer/symbiote/silverstripe-advancedworkflow to a version that resolves this vulnerability.

    Fixed in 6.4.5

Event History

Aug 27, 2026
Advisory Published
via GitHub·05:20 PM
Data Sourced
via GitHub·05:20 PM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What level of access does an attacker need?

The CVSS vector indicates high privileges are required. Exploitation is network-accessible and does not require user interaction.

2

Which environments are most exposed?

Deployments are at risk when a highly privileged user can access and modify the advanced workflow email template field. The provided data does not identify affected or fixed versions, configuration prerequisites, or temporary mitigations.

Contact

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