RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.9 and 4.3.3, the Shovel parameter parser converted attacker-controlled runtime parameter values into non-garbage-collected Erlang atoms before bounding them or checking a fixed allowlist. Exploitation requires network access to the Management HTTP API, valid credentials with both the management and policymaker tags, permission to set Shovel runtime parameters on a vhost, and the rabbitmq_shovel and rabbitmq_shovel_management plugins to be enabled. The attacker can exhaust the node-wide atom table and deny service, and malicious parameters are stored durably and reparsed when workers start, so atom pressure can recur after restart without a live attacker connection. This issue is fixed in versions 4.2.9 and 4.3.3.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-400"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67415.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "4.3.0"
},
{
"fixed": "4.3.3"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"introduced": "4.2.0"
},
{
"fixed": "4.2.9"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"original_tag": "v4.2.9",
"range": [
{
"fixed": "47d6d6457c7d1a440daed643cb7d76bba313e79c"
}
],
"source": "REFERENCES_TAG"
},
{
"original_tag": "v4.3.3",
"range": [
{
"fixed": "1d284b2d2a1e2f845ad22b0d5ee38ec372d50802"
}
],
"source": "REFERENCES_TAG"
}
]
}