Silverstripe Framework has a XSS vulnerability in HTML editor
The advisory, in context
Impact
A bad actor with access to edit content in the CMS could send a specifically crafted encoded payload to the server, which could be used to inject a JavaScript payload on the front end of the site. The payload would be sanitised on the client-side, but server-side sanitisation doesn't catch it.
The server-side sanitisation logic has been updated to sanitise against this attack.
Reported by
James Nicoll from Fujitsu Cyber
References
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 5.3.23
Fixed in 5.3.23
457 explicitly affected versions
2.4.10, 2.4.11, 2.4.12, 2.4.13, 2.4.9, 2.5.0, 3.0.10, 3.0.10-rc1, 3.0.11, 3.0.11-rc1, 3.0.12, 3.0.13, 3.0.14, 3.0.2.1, 3.0.3, 3.0.3-rc1, 3.0.3-rc2, 3.0.4, 3.0.5, 3.0.6, 3.0.6-rc1, 3.0.6-rc2, 3.0.7, 3.0.7-rc1, 3.0.8, 3.0.9, 3.0.9-rc1, 3.1.0, 3.1.0-beta1, 3.1.0-beta2, 3.1.0-beta3, 3.1.0-rc1, 3.1.0-rc2, 3.1.0-rc3, 3.1.1, 3.1.10, 3.1.10-rc1, 3.1.10-rc2, 3.1.11, 3.1.11-rc1, 3.1.12, 3.1.13, 3.1.13-rc1, 3.1.14, 3.1.14-rc1, 3.1.15, 3.1.16, 3.1.16-rc1, 3.1.17, 3.1.17-rc1, 3.1.17-rc2, 3.1.18, 3.1.18-rc1, 3.1.18-rc2, 3.1.19, 3.1.19-rc1, 3.1.2, 3.1.2-rc1, 3.1.20, 3.1.20-rc1, 3.1.20-rc2, 3.1.21, 3.1.3, 3.1.3-rc1, 3.1.3-rc2, 3.1.4, 3.1.4-rc1, 3.1.5, 3.1.5-rc1, 3.1.6, 3.1.6-rc1, 3.1.6-rc2, 3.1.6-rc3, 3.1.7, 3.1.7-rc1, 3.1.8, 3.1.9, 3.1.9-rc1, 3.2.0, 3.2.0-beta1, 3.2.0-beta2, 3.2.0-rc1, 3.2.0-rc2, 3.2.1, 3.2.1-rc1, 3.2.1-rc2, 3.2.2, 3.2.2-rc1, 3.2.2-rc2, 3.2.3, 3.2.3-rc1, 3.2.3-rc2, 3.2.4, 3.2.4-rc1, 3.2.5, 3.2.5-rc1, 3.2.5-rc2, 3.2.6, 3.3.0, 3.3.0-beta1, 3.3.0-rc1, 3.3.0-rc2, 3.3.0-rc3, 3.3.1, 3.3.1-rc1, 3.3.1-rc2, 3.3.2, 3.3.2-rc1, 3.3.3, 3.3.3-rc1, 3.3.3-rc2, 3.3.4, 3.4.0, 3.4.0-rc1, 3.4.1, 3.4.1-rc1, 3.4.1-rc2, 3.4.2, 3.4.3, 3.4.3-rc1, 3.4.4, 3.4.4-rc1, 3.4.5, 3.4.5-rc1, 3.4.6, 3.4.6-rc1, 3.4.6-rc2, 3.5.0, 3.5.0-rc1, 3.5.0-rc2, 3.5.0-rc3, 3.5.1, 3.5.1-rc1, 3.5.1-rc2, 3.5.2, 3.5.2-rc1, 3.5.3, 3.5.3-rc1, 3.5.4, 3.5.4-rc1, 3.5.5, 3.5.5-beta1, 3.5.5-beta2, 3.5.6, 3.5.6-rc1, 3.5.7, 3.5.8, 3.5.8-rc1, 3.6.0, 3.6.0-beta1, 3.6.0-beta2, 3.6.0-rc1, 3.6.1, 3.6.1-alpha2, 3.6.2, 3.6.2-beta1, 3.6.2-beta2, 3.6.3, 3.6.3-rc2, 3.6.4, 3.6.5, 3.6.6, 3.6.6-rc1, 3.6.7, 3.6.8, 3.7.0, 3.7.1, 3.7.1-rc1, 3.7.2, 3.7.3, 3.7.4, 3.7.5, 3.7.6, 3.7.7, 4.0.0, 4.0.0-alpha1, 4.0.0-alpha2, 4.0.0-alpha3, 4.0.0-alpha4, 4.0.0-alpha5, 4.0.0-alpha6, 4.0.0-alpha7, 4.0.0-beta1, 4.0.0-beta2, 4.0.0-beta3, 4.0.0-beta4, 4.0.0-rc1, 4.0.0-rc2, 4.0.0-rc3, 4.0.1, 4.0.1-rc1, 4.0.2, 4.0.3, 4.0.4, 4.0.5, 4.0.6, 4.0.7, 4.1.0, 4.1.0-rc1, 4.1.0-rc2, 4.1.1, 4.1.2, 4.1.3, 4.1.4, 4.1.5, 4.10.0, 4.10.0-beta1, 4.10.0-rc1, 4.10.1, 4.10.10, 4.10.11, 4.10.2, 4.10.3, 4.10.4, 4.10.5, 4.10.6, 4.10.7, 4.10.8, 4.10.9, 4.11.0, 4.11.0-beta1, 4.11.0-beta2, 4.11.0-beta3, 4.11.0-rc1, 4.11.1, 4.11.10, 4.11.11, 4.11.12, 4.11.13, 4.11.14, 4.11.15, 4.11.16, 4.11.2, 4.11.3, 4.11.4, 4.11.5, 4.11.6, 4.11.7, 4.11.8, 4.11.9, 4.12.0, 4.12.0-beta1, 4.12.0-rc1, 4.12.1, 4.12.2, 4.12.3, 4.12.4, 4.12.5, 4.12.6, 4.12.7, 4.13.0, 4.13.0-beta1, 4.13.0-rc1, 4.13.1, 4.13.10, 4.13.11, 4.13.12, 4.13.13, 4.13.14, 4.13.15, 4.13.16, 4.13.17, 4.13.18, 4.13.19, 4.13.2, 4.13.20, 4.13.21, 4.13.22, 4.13.23, 4.13.24, 4.13.25, 4.13.26, 4.13.27, 4.13.28, 4.13.29, 4.13.3, 4.13.30, 4.13.31, 4.13.32, 4.13.33, 4.13.34, 4.13.35, 4.13.36, 4.13.37, 4.13.38, 4.13.39, 4.13.4, 4.13.40, 4.13.41, 4.13.42, 4.13.43, 4.13.44, 4.13.5, 4.13.6, 4.13.7, 4.13.8, 4.13.9, 4.2.0, 4.2.0-beta1, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.3.0, 4.3.0-rc1, 4.3.1, 4.3.2, 4.3.3, 4.3.4, 4.3.5, 4.4.0, 4.4.0-rc1, 4.4.1, 4.4.2, 4.4.3, 4.4.4, 4.4.5, 4.4.6, 4.4.7, 4.5.0, 4.5.0-alpha1, 4.5.0-rc1, 4.5.0-rc2, 4.5.1, 4.5.2, 4.5.3, 4.5.4, 4.6.0, 4.6.0-beta1, 4.6.0-rc1, 4.6.1, 4.6.2, 4.7.0, 4.7.0-beta1, 4.7.0-rc1, 4.7.1, 4.7.2, 4.7.3, 4.7.4, 4.8.0, 4.8.0-beta1, 4.8.0-rc1, 4.8.1, 4.9.0, 4.9.0-alpha1, 4.9.0-beta1, 4.9.0-rc1, 4.9.1, 4.9.2, 4.9.3, 4.9.4, 5.0.0, 5.0.0-alpha1, 5.0.0-beta1, 5.0.0-beta2, 5.0.0-beta3, 5.0.0-rc1, 5.0.1, 5.0.10, 5.0.11, 5.0.12, 5.0.13, 5.0.14, 5.0.15, 5.0.16, 5.0.17, 5.0.18, 5.0.19, 5.0.2, 5.0.20, 5.0.21, 5.0.22, 5.0.23, 5.0.3, 5.0.4, 5.0.5, 5.0.6, 5.0.7, 5.0.8, 5.0.9, 5.1.0, 5.1.0-beta1, 5.1.0-rc1, 5.1.1, 5.1.10, 5.1.11, 5.1.12, 5.1.13, 5.1.14, 5.1.15, 5.1.16, 5.1.17, 5.1.18, 5.1.19, 5.1.2, 5.1.20, 5.1.21, 5.1.22, 5.1.23, 5.1.3, 5.1.4, 5.1.5, 5.1.6, 5.1.7, 5.1.8, 5.1.9, 5.2.0, 5.2.0-beta1, 5.2.0-rc1, 5.2.1, 5.2.10, 5.2.11, 5.2.12, 5.2.13, 5.2.14, 5.2.15, 5.2.16, 5.2.17, 5.2.18, 5.2.19, 5.2.2, 5.2.20, 5.2.21, 5.2.22, 5.2.3, 5.2.4, 5.2.5, 5.2.6, 5.2.7, 5.2.8, 5.2.9, 5.3.0, 5.3.0-beta1, 5.3.0-rc1, 5.3.1, 5.3.10, 5.3.11, 5.3.12, 5.3.13, 5.3.14, 5.3.15, 5.3.16, 5.3.17, 5.3.18, 5.3.19, 5.3.2, 5.3.20, 5.3.21, 5.3.22, 5.3.3, 5.3.4, 5.3.5, 5.3.6, 5.3.7, 5.3.8, 5.3.9
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.3.23"
}
],
"type": "ECOSYSTEM"
}
],
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}References
- https://github.com/silverstripe/silverstripe-framework/security/advisories/GHSA-rhx4-hvx9-j387
- https://nvd.nist.gov/vuln/detail/CVE-2025-30148
- https://github.com/silverstripe/silverstripe-framework/pull/11682
- https://github.com/silverstripe/silverstripe-framework/commit/e99cfd62d160d145a76fcf9631e6b11226e42358
- https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/framework/CVE-2025-30148.yaml
- https://github.com/silverstripe/silverstripe-framework
- https://www.silverstripe.org/download/security-releases/cve-2025-30148