CVE-2026-33557
unknown
CVSS v3
—
CVSS v4 NEW
—
VIR risk
—
Description
Apache Kafka does not validate JWT tokens in its OAUTHBEARER authentication implementation
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Maven | org.apache.kafka:kafka-clients | >=4.1.0,<4.1.2 | 4.1.2 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-33557
- https://github.com/apache/kafka/commit/01d8e7db8d08dbd538892b409457ea6bfcc2a422
- https://github.com/apache/kafka
- https://kafka.apache.org/cve-list
- https://lists.apache.org/thread/v57o00hm6yszdpdnvqx2ss4561yh953h
- http://www.openwall.com/lists/oss-security/2026/04/17/2
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.