CVE-2026-121623 Symfony: DataUriNormalizer Opens Data URIs With a Non-Lowercase Scheme as Local Files, Letting a Client Read Any Server File
| Reporter | Title | Published | Views | Family All 6 |
|---|---|---|---|---|
 | CVE-2026-121623 | 6 Nov 202616:13 | – | circl |
 | CVE-2026-121623 | 6 Nov 202616:08 | – | cve |
 | EUVD-2026-118332 | 6 Nov 202616:08 | – | euvd |
 | CVE-2026-121623 | 6 Nov 202616:17 | – | nvd |
 | PT-2026-138092 | 6 Nov 202600:00 | – | ptsecurity |
 | CVE-2026-121623: sensiolabs symfony: The Symfony Serializer component DataUriNormalizer::denormalize() matches the data: scheme with a case-sensitive… | 6 Nov 202600:00 | – | rapid7 |
[
{
"vendor": "sensiolabs",
"product": "symfony",
"collectionURL": "https://packagist.org/packages/symfony/serializer",
"packageName": "symfony/serializer",
"repo": "https://github.com/symfony/serializer",
"modules": [
"Symfony\\Component\\Serializer\\Normalizer\\DataUriNormalizer::denormalize()"
],
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "5.4.56",
"versionType": "git"
},
{
"status": "affected",
"version": "6.0.0",
"lessThan": "6.4.50",
"versionType": "git"
},
{
"status": "affected",
"version": "7.0.0",
"lessThan": "7.4.23",
"versionType": "git"
},
{
"status": "affected",
"version": "8.0.0",
"lessThan": "8.1.11",
"versionType": "git"
}
],
"defaultStatus": "unaffected"
}
]Data
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06 Nov 2026 16:08Current
CVSS 48.2