CVE Explorer
CVE-2026-41727
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.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","product":"Spring for Apache Kafka","vendor":"Spring","versions":[{"lessThan":"4.0.5.1","status":"affected","version":"4.0.0","versionType":"custom"},{"lessThan":"3.3.15.1","status":"affected","version":"3.3.0","versionType":"custom"},{"lessThan":"3.2.14","status":"affected","version":"3.2.0","versionType":"custom"},{"lessThan":"2.9.14","status":"affected","version":"2.9.0","versionType":"custom"},{"lessThan":"2.8.12","status":"affected","version":"2.8.0","versionType":"custom"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:c70155ff2533a05f44726c8effc318f49da6a11f00303a6c529f1c80d42136f7 · sha256:259ac483c98302c9… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"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"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:c70155ff2533a05f44726c8effc318f49da6a11f00303a6c529f1c80d42136f7 · sha256:259ac483c98302c9… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-20","description":"CWE-20: Improper Input Validation","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:c70155ff2533a05f44726c8effc318f49da6a11f00303a6c529f1c80d42136f7 · sha256:259ac483c98302c9… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"url":"https://spring.io/security/cve-2026-41727"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:c70155ff2533a05f44726c8effc318f49da6a11f00303a6c529f1c80d42136f7 · sha256:259ac483c98302c9… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.