Nuclio is a "Serverless" framework for Real-Time Events and Data Processing. Prior to version 1.16.4, the Nuclio controller builds a curl invocation string for each cron trigger and stores it as the args of a Kubernetes CronJob container (/bin/sh, -c, ). Two fields in the trigger specification flow into this string without adequate sanitization: event.headers keys and event.body. This issue has been patched in version 1.16.4.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-78"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52831.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "1.16.4"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "3356b86a8bfab3f960aa420310ebff765df9dede"
}
],
"source": "REFERENCES_COMMIT"
},
{
"original_tag": "1.16.4",
"range": [
{
"fixed": "19b495069eba827f39ecfc9bfb46b3faefab17f9"
}
],
"source": "REFERENCES_TAG"
}
]
}