Sulu vulnerable to XXE in SVG File upload Inspector
The advisory, in context
Impact
A admin user can upload SVG which may load external data via XML DOM library, specially this can be used for eventually reference none secure XML External Entity References.
Patches
The problem has not been patched yet. Users should upgrade to patched versions once they become available. Currently affected versions are:
- 2.6.9
- 2.5.25
- 3.0.0-alpha3
Workarounds
Patch the effect file src/Sulu/Bundle/MediaBundle/FileInspector/SvgFileInspector.php in sulu with:
-$dom->loadXML($svg, \LIBXML_NOENT | \LIBXML_DTDLOAD);
+$dom->loadXML($data, LIBXML_NONET);
References
- GitHub repository: https://github.com/sulu/sulu
- Vulnerable code: https://github.com/sulu/sulu/blob/2.6/src/Sulu/Bundle/MediaBundle/FileInspector/SvgFileInspector.php
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.
From 2.5.21 before 2.5.25
Fixed in 2.5.25
4 explicitly affected versions
2.5.21, 2.5.22, 2.5.23, 2.5.24
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "2.5.21"
},
{
"fixed": "2.5.25"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.5.21",
"2.5.22",
"2.5.23",
"2.5.24"
]
}From 2.6.5 before 2.6.9
Fixed in 2.6.9
4 explicitly affected versions
2.6.5, 2.6.6, 2.6.7, 2.6.8
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "2.6.5"
},
{
"fixed": "2.6.9"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.6.5",
"2.6.6",
"2.6.7",
"2.6.8"
]
}From 3.0.0-alpha1 before 3.0.0-alpha3
Fixed in 3.0.0-alpha3
2 explicitly affected versions
3.0.0-alpha1, 3.0.0-alpha2
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "3.0.0-alpha1"
},
{
"fixed": "3.0.0-alpha3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.0.0-alpha1",
"3.0.0-alpha2"
]
}References
- https://github.com/sulu/sulu/security/advisories/GHSA-f6rx-hf55-4255
- https://nvd.nist.gov/vuln/detail/CVE-2025-47778
- https://github.com/sulu/sulu/commit/02f52fca04eb9495b9b4a0c5cc64cf23bc27f544
- https://github.com/sulu/sulu
- https://github.com/sulu/sulu/blob/2.6/src/Sulu/Bundle/MediaBundle/FileInspector/SvgFileInspector.php