CVE-2026-83525
Apache Kafka: Incorrect boolean operator in FetchSnapshot RPC handler allows authenticated network clients to crash the KRaft controller via a malformed request.
Not available
At a glance
- Source
- CVE.org
- State
- PUBLISHED
- Published
- Updated
- Assigner
- apache
Description
Incorrect operator (CWE-480) in the FetchSnapshot RPC handler in Apache Kafka from 2.8.0 before 4.2.2, and from 4.3.0 before 4.3.2 on all platforms allows an authenticated attacker with CLUSTER_ACTION privilege to cause a denial of service (controller process termination) via a crafted FetchSnapshotRequest with an empty topics array or a topic with no partitions. Users are recommended to upgrade to version 4.2.2, 4.3.2, or 4.4.0, which fix this issue. Users on unsupported branches (4.1.x and earlier) should upgrade to 4.2.2 or later.
Weaknesses (CWE)
- CWE-480 — Use of Incorrect Operator
References
European references
- ENISA EUVD · EUVD-2026-112210
- GCVE · GCVE-0-2026-83525
CERT-FR advisories
- CERTFR-2026-AVI-1415 — Multiples vulnérabilités dans Apache Kafka · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Apache Software Foundation · Apache Kafka | affected 2.8.0 < 4.2.2 ; affected 4.3.0 < 4.3.2 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |