Spring Kafka's retry topic infrastructure did not sufficiently validate user-controlled header values before acting on them. A producer could send a record with a crafted retry_topic-attempts header to supply an out-of-range attempt count and cause the retry topic router to misidentify where the message was in the retry sequence.
Affected versions: Spring for Apache Kafka 4.0.0 through 4.0.5; 3.3.0 through 3.3.15; 3.2.0 through 3.2.13; 2.9.0 through 2.9.13; 2.8.0 through 2.8.11.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41727.json",
"cna_assigner": "vmware",
"cwe_ids": [
"CWE-20"
],
"unresolved_ranges": [
{
"extracted_events": [
{
"introduced": "4.0.0"
},
{
"fixed": "4.0.5.1"
},
{
"introduced": "3.3.0"
},
{
"fixed": "3.3.15.1"
},
{
"introduced": "3.2.0"
},
{
"fixed": "3.2.14"
},
{
"introduced": "2.9.0"
},
{
"fixed": "2.9.14"
},
{
"introduced": "2.8.0"
},
{
"fixed": "2.8.12"
}
],
"source": "AFFECTED_FIELD"
},
{
"extracted_events": [
{
"introduced": "4.0.0"
},
{
"fixed": "4.0.5"
},
{
"introduced": "3.3.0"
},
{
"fixed": "3.3.15"
},
{
"introduced": "3.2.0"
},
{
"fixed": "3.2.13"
},
{
"introduced": "2.9.0"
},
{
"fixed": "2.9.13"
},
{
"introduced": "2.8.0"
},
{
"fixed": "2.8.11"
}
],
"source": "DESCRIPTION"
}
]
}{
"cpe": "cpe:2.3:a:vmware:spring_for_apache_kafka:*:*:*:*:*:*:*:*",
"source": "CPE_RANGE",
"extracted_events": [
{
"introduced": "2.8.0"
},
{
"last_affected": "2.8.11"
},
{
"introduced": "2.9.0"
},
{
"last_affected": "2.9.13"
},
{
"introduced": "3.3.0"
},
{
"last_affected": "3.3.15"
},
{
"introduced": "4.0.0"
},
{
"last_affected": "4.0.5"
}
]
}