{"id":"CVE-2026-41727","state":"PUBLISHED","title":"In Spring for Apache Kafka, forged retry topic headers subvert retry routing and backoff behavior","description":"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.","publishedAt":"2026-06-09T23:49:10.215Z","updatedAt":"2026-06-27T21:15:43.681Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"vmware"},"assigner":"vmware","products":["Spring Spring for Apache Kafka"],"affected":[{"vendor":"Spring","product":"Spring for Apache Kafka","defaultStatus":"unaffected","versions":[{"version":"4.0.0","status":"affected","lessThan":"4.0.5.1","versionType":"custom"},{"version":"3.3.0","status":"affected","lessThan":"3.3.15.1","versionType":"custom"},{"version":"3.2.0","status":"affected","lessThan":"3.2.14","versionType":"custom"},{"version":"2.9.0","status":"affected","lessThan":"2.9.14","versionType":"custom"},{"version":"2.8.0","status":"affected","lessThan":"2.8.12","versionType":"custom"}]}],"references":["https://spring.io/security/cve-2026-41727"],"weaknesses":["CWE-20"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/41xxx/CVE-2026-41727.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-41727","state":"PUBLISHED","datePublished":"2026-06-09T23:49:10.215Z","dateUpdated":"2026-06-27T21:15:43.681Z","assignerShortName":"vmware","assignerOrgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","dateReserved":"2026-04-22T06:21:39.014Z"},"containers":{"cna":{"title":"In Spring for Apache Kafka, forged retry topic headers subvert retry routing and backoff behavior","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."}],"affected":[{"vendor":"Spring","product":"Spring for Apache Kafka","defaultStatus":"unaffected","versions":[{"version":"4.0.0","status":"affected","lessThan":"4.0.5.1","versionType":"custom"},{"version":"3.3.0","status":"affected","lessThan":"3.3.15.1","versionType":"custom"},{"version":"3.2.0","status":"affected","lessThan":"3.2.14","versionType":"custom"},{"version":"2.9.0","status":"affected","lessThan":"2.9.14","versionType":"custom"},{"version":"2.8.0","status":"affected","lessThan":"2.8.12","versionType":"custom"}]}],"references":[{"url":"https://spring.io/security/cve-2026-41727"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseSeverity":"MEDIUM","baseScore":6.5,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","lang":"en","description":"CWE-20: Improper Input Validation","type":"CWE"}]}],"providerMetadata":{"shortName":"vmware","orgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","dateUpdated":"2026-06-27T21:15:43.681Z"},"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."}]}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.1"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-10T17:33:57.867244Z","id":"CVE-2026-41727","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-10T17:34:39.609Z"}}]}}}