{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-41727", "assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "state": "PUBLISHED", "assignerShortName": "vmware", "dateReserved": "2026-04-22T06:21:39.014Z", "datePublished": "2026-06-09T23:49:10.215Z", "dateUpdated": "2026-06-09T23:49:10.215Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d", "shortName": "vmware", "dateUpdated": "2026-06-09T23:49:10.215Z"}, "title": "In Spring for Apache Kafka, forged retry topic headers subvert retry routing and backoff behavior", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-20", "description": "CWE-20: Improper Input Validation", "type": "CWE"}]}], "impacts": [{"descriptions": [{"lang": "en", "value": "A producer can send Kafka records with forged retry_topic-attempts or retry_topic_backoff-timestamp headers to cause misrouting or impose arbitrarily long pauses, disrupting retry behavior."}]}], "affected": [{"vendor": "Spring", "product": "Spring for Apache Kafka", "defaultStatus": "unaffected", "versions": [{"status": "affected", "version": "4.0.0", "lessThan": "4.0.6", "versionType": "custom"}, {"status": "affected", "version": "3.3.0", "lessThan": "3.3.16", "versionType": "custom"}, {"status": "affected", "version": "3.2.0", "lessThan": "3.2.14", "versionType": "custom"}, {"status": "affected", "version": "2.9.0", "lessThan": "2.9.14", "versionType": "custom"}, {"status": "affected", "version": "2.8.0", "lessThan": "2.8.12", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "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.\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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "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.\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."}]}], "references": [{"url": "https://spring.io/security/cve-2026-41727"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM"}}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.1"}}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "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.\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."}], "id": "CVE-2026-41727", "lastModified": "2026-06-10T00:16:52.143", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "security@vmware.com", "type": "Secondary"}]}, "published": "2026-06-10T00:16:52.143", "references": [{"source": "security@vmware.com", "url": "https://spring.io/security/cve-2026-41727"}], "sourceIdentifier": "security@vmware.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "security@vmware.com", "type": "Secondary"}]}

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{"created": "2026-06-10T01:30:18.170890+00:00", "updated": "2026-06-10T01:30:18.170902+00:00", "vendors": []}