{
"id": "GHSA-xvfq-4q6q-gxx7",
"aliases": [
"CVE-2026-41726"
],
"details": "When an application opts into DelegatingDeserializer, a producer can grow the consumer's heap without bound by sending records with unique random spring.kafka.serialization.selector header values, eventually causing GC thrash and OutOfMemoryError.\n\nAffected versions:\nSpring 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.",
"summary": "In Spring for Apache Kafka, unbounded delegate cache keyed on user-controlled, potentially malicious selector header",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.0.0"
},
{
"fixed": "4.0.6"
}
]
}
],
"package": {
"name": "org.springframework.kafka:spring-kafka",
"ecosystem": "Maven"
},
"database_specific": {
"last_known_affected_version_range": "<= 4.0.5"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "3.3.0"
},
{
"fixed": "3.3.16"
}
]
}
],
"package": {
"name": "org.springframework.kafka:spring-kafka",
"ecosystem": "Maven"
},
"database_specific": {
"last_known_affected_version_range": "<= 3.3.15"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "3.2.0"
},
{
"last_affected": "3.2.13"
}
]
}
],
"package": {
"name": "org.springframework.kafka:spring-kafka",
"ecosystem": "Maven"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "2.9.0"
},
{
"last_affected": "2.9.13"
}
]
}
],
"package": {
"name": "org.springframework.kafka:spring-kafka",
"ecosystem": "Maven"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"last_affected": "2.8.11"
}
]
}
],
"package": {
"name": "org.springframework.kafka:spring-kafka",
"ecosystem": "Maven"
}
}
],
"modified": "2026-06-12T21:51:01Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
}
],
"published": "2026-06-10T00:31:52Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41726",
"type": "ADVISORY"
},
{
"url": "https://github.com/spring-projects/spring-kafka/issues/4489",
"type": "WEB"
},
{
"url": "https://github.com/spring-projects/spring-kafka/commit/ca2337ba789c5778a10197bda17a62915247ff6c",
"type": "WEB"
},
{
"url": "https://github.com/spring-projects/spring-kafka",
"type": "PACKAGE"
},
{
"url": "https://spring.io/security/cve-2026-41726",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-770"
],
"severity": "MODERATE",
"github_reviewed": true,
"nvd_published_at": "2026-06-10T00:16:52Z",
"github_reviewed_at": "2026-06-12T21:51:01Z"
}
}