In JetBrains Kotlin before 2.4.20 code execution was possible via unsafe deserialization in the build cache metadata
{
"cna_assigner": "JetBrains",
"cwe_ids": [
"CWE-502"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53914.json",
"unresolved_ranges": [
{
"extracted_events": [
{
"fixed": "2.4.20"
}
],
"source": "AFFECTED_FIELD"
},
{
"extracted_events": [
{
"fixed": "2.4.20"
}
],
"source": "DESCRIPTION"
}
]
}{
"cpe": "cpe:2.3:a:jetbrains:kotlin:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "2.4.20"
}
],
"source": "CPE_RANGE"
}