RabbitMQ is a messaging and streaming broker. Prior to 4.2.6, the RabbitMQ stream listener does not enforce the configured stream frame-size limit while assembling frames during authentication and before Tune negotiation, allowing an unauthenticated remote client to declare oversized frame lengths and consume broker memory in rabbit_stream_core. This issue is fixed in version 4.2.6.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-770"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57220.json"
}{
"extracted_events": [
{
"cpe": "cpe:2.3:a:broadcom:rabbitmq_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.0"
},
{
"fixed": "4.2.6"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "595ec28fa1621b1f2c28124e4e0466a8ad963547"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "773a49c4921e8be990262a2d609c35916825679e"
}
],
"source": "REFERENCES_COMMIT"
},
{
"original_tag": "v4.2.6",
"range": [
{
"fixed": "8a56c37f099a7bf609a555de3f0ff8ed23964d20"
}
],
"source": "REFERENCES_TAG"
}
]
}