silverstripe-advancedworkflow vulnerable to remote code execution via advanced workflow email template
The advisory, in context
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 packages
Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.
Earlier releases before 6.4.5
Fixed in 6.4.5
110 explicitly affected versions
2.1.0, 3.0.1, 3.0.1-rc1, 3.0.2, 3.0.3, 3.0.4, 3.0.5, 3.0.6, 3.1.0, 3.1.1, 3.1.2, 3.1.3, 3.2.0, 3.2.1, 3.2.2, 3.2.3, 3.3.0, 3.3.1, 3.3.2, 3.3.3, 3.4.0, 3.5.0, 3.6.0, 3.6.1, 3.7.0, 3.7.1, 3.7.2, 3.8.0, 3.8.1, 3.8.2, 3.9.0, 3.9.1, 4.0.0, 4.0.1, 4.1.0, 4.2.0, 5.0.0, 5.0.1, 5.0.2, 5.0.3, 5.0.4, 5.0.5, 5.0.6, 5.0.7, 5.0.8, 5.1.0, 5.1.1, 5.1.2, 5.2.0, 5.2.1, 5.2.2, 5.3.0, 5.3.1, 5.4.0, 5.4.0-beta1, 5.4.0-rc1, 5.5.0, 5.5.0-alpha1, 5.5.0-beta1, 5.5.0-rc1, 5.5.1, 5.6.0, 5.6.0-beta1, 5.6.0-rc1, 5.7.0, 5.8.0, 5.8.0-beta1, 5.8.0-rc1, 5.9.0, 5.9.0-beta1, 5.9.0-rc1, 5.9.1, 5.9.2, 5.9.3, 5.9.4, 5.9.5, 5.9.6, 5.9.7, 6.0.0, 6.0.0-beta1, 6.0.0-rc1, 6.0.1, 6.0.2, 6.0.3, 6.0.4, 6.1.0, 6.1.0-beta1, 6.1.0-rc1, 6.1.1, 6.1.2, 6.1.3, 6.1.4, 6.2.0, 6.2.0-beta1, 6.2.0-rc1, 6.2.1, 6.2.2, 6.2.3, 6.2.4, 6.3.0, 6.3.0-beta1, 6.3.0-rc1, 6.3.1, 6.4.0, 6.4.0-beta1, 6.4.0-rc1, 6.4.1, 6.4.2, 6.4.3, 6.4.4
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "6.4.5"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.1.0",
"3.0.1",
"3.0.1-rc1",
"3.0.2",
"3.0.3",
"3.0.4",
"3.0.5",
"3.0.6",
"3.1.0",
"3.1.1",
"3.1.2",
"3.1.3",
"3.2.0",
"3.2.1",
"3.2.2",
"3.2.3",
"3.3.0",
"3.3.1",
"3.3.2",
"3.3.3",
"3.4.0",
"3.5.0",
"3.6.0",
"3.6.1",
"3.7.0",
"3.7.1",
"3.7.2",
"3.8.0",
"3.8.1",
"3.8.2",
"3.9.0",
"3.9.1",
"4.0.0",
"4.0.1",
"4.1.0",
"4.2.0",
"5.0.0",
"5.0.1",
"5.0.2",
"5.0.3",
"5.0.4",
"5.0.5",
"5.0.6",
"5.0.7",
"5.0.8",
"5.1.0",
"5.1.1",
"5.1.2",
"5.2.0",
"5.2.1",
"5.2.2",
"5.3.0",
"5.3.1",
"5.4.0",
"5.4.0-beta1",
"5.4.0-rc1",
"5.5.0",
"5.5.0-alpha1",
"5.5.0-beta1",
"5.5.0-rc1",
"5.5.1",
"5.6.0",
"5.6.0-beta1",
"5.6.0-rc1",
"5.7.0",
"5.8.0",
"5.8.0-beta1",
"5.8.0-rc1",
"5.9.0",
"5.9.0-beta1",
"5.9.0-rc1",
"5.9.1",
"5.9.2",
"5.9.3",
"5.9.4",
"5.9.5",
"5.9.6",
"5.9.7",
"6.0.0",
"6.0.0-beta1",
"6.0.0-rc1",
"6.0.1",
"6.0.2",
"6.0.3",
"6.0.4",
"6.1.0",
"6.1.0-beta1",
"6.1.0-rc1",
"6.1.1",
"6.1.2",
"6.1.3",
"6.1.4",
"6.2.0",
"6.2.0-beta1",
"6.2.0-rc1",
"6.2.1",
"6.2.2",
"6.2.3",
"6.2.4",
"6.3.0",
"6.3.0-beta1",
"6.3.0-rc1",
"6.3.1",
"6.4.0",
"6.4.0-beta1",
"6.4.0-rc1",
"6.4.1",
"6.4.2",
"6.4.3",
"6.4.4"
]
}From 7.0.0 before 7.1.3
Fixed in 7.1.3
8 explicitly affected versions
7.0.0, 7.0.1, 7.0.2, 7.1.0, 7.1.0-beta1, 7.1.0-rc1, 7.1.1, 7.1.2
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "7.0.0"
},
{
"fixed": "7.1.3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"7.0.0",
"7.0.1",
"7.0.2",
"7.1.0",
"7.1.0-beta1",
"7.1.0-rc1",
"7.1.1",
"7.1.2"
]
}From 7.2.0 before 7.2.1
Fixed in 7.2.1
1 explicitly affected versions
7.2.0
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "7.2.0"
},
{
"fixed": "7.2.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"7.2.0"
]
}References
- https://github.com/silverstripe/silverstripe-advancedworkflow/security/advisories/GHSA-39mm-rwm3-29jp
- https://github.com/silverstripe/silverstripe-advancedworkflow/pull/629
- https://github.com/silverstripe/silverstripe-advancedworkflow/pull/630
- https://github.com/silverstripe/silverstripe-advancedworkflow/commit/28d0b536491e5c68b1c445579bdd1ddc8beaf8bb
- https://github.com/silverstripe/silverstripe-advancedworkflow/commit/f170766af992ed2ed3e5f21d127d0d0d3129678b
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symbiote/silverstripe-advancedworkflow/CVE-2026-54718.yaml
- https://github.com/silverstripe/silverstripe-advancedworkflow
- https://github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/6.4.5
- https://github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/7.1.3
- https://github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/7.2.1
- https://www.silverstripe.org/download/security-releases/cve-2026-54718