The extension's indexer passed every field value returned by content object rendering through PHP's unserialize() function when transferring multi-value data for the SOLRCLASSIFICATION, SOLRMULTIVALUE and SOLR_RELATION content object types, rather than a safe format. If user-generated content saved in the TYPO3 database can reach an indexed field, this exposes a PHP Object Injection surface.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56095.json",
"cwe_ids": [
"CWE-502"
],
"cna_assigner": "TYPO3"
}{
"source": "AFFECTED_FIELD",
"extracted_events": [
{
"introduced": "13.0.0"
},
{
"fixed": "13.1.4"
},
{
"introduced": "12.0.0"
},
{
"fixed": "12.1.4"
},
{
"introduced": "0"
},
{
"fixed": "11.6.6"
}
]
}