In Fluent Bit 2.1.8 through 2.2.1, a NULL pointer dereference can be caused via an invalid HTTP payload with the content type of x-www-form-urlencoded. It crashes and does not restart. This could result in logs not being delivered properly.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/23xxx/CVE-2024-23722.json",
"cna_assigner": "mitre"
}"2026-05-30T23:16:59Z"
[
{
"source": "https://github.com/fluent/fluent-bit/commit/842a48223bdeb5da65db409eeb46b3f50acdcf7e",
"digest": {
"length": 3664.0,
"function_hash": "320431408164505883770738106810979250149"
},
"deprecated": false,
"id": "CVE-2024-23722-5f3ff68a",
"signature_version": "v1",
"target": {
"function": "in_elasticsearch_bulk_prot_handle",
"file": "plugins/in_elasticsearch/in_elasticsearch_bulk_prot.c"
},
"signature_type": "Function"
},
{
"source": "https://github.com/fluent/fluent-bit/commit/842a48223bdeb5da65db409eeb46b3f50acdcf7e",
"digest": {
"threshold": 0.9,
"line_hashes": [
"12900398591467909537862406990407407153",
"275611033061265301844402903244709894178",
"218857048594049653399571228409886444707",
"121297384569911770298713098067593796942"
]
},
"deprecated": false,
"id": "CVE-2024-23722-7b1324aa",
"signature_version": "v1",
"target": {
"file": "plugins/in_elasticsearch/in_elasticsearch_bulk_prot.c"
},
"signature_type": "Line"
}
]
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-23722.json"