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The vulnerability in the org.apache.kafka.common.security.oauthbearer.DefaultJwtValidator component of the Apache Kafka messaging broker allows a attacker to circumvent security restrictions and gain unauthorized access to protected information.
🗓️ 08 Jul 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 3 Views
| Reporter | Title | Published | Views | Family All 33 |
|---|---|---|---|---|
 | CVE-2026-33557 | 20 Apr 202613:28 | – | attackerkb |
 | CVE-2026-33557 vulnerabilities | 25 Apr 202613:17 | – | cgr |
 | CVE-2026-33557 | 17 Apr 202609:12 | – | circl |
 | Apache Kafka 安全漏洞 | 20 Apr 202600:00 | – | cnnvd |
 | CVE-2026-33557 | 20 Apr 202613:28 | – | cve |
 | CVE-2026-33557 Apache Kafka: Missing JWT token validation in OAUTHBEARER authentication | 20 Apr 202613:28 | – | cvelist |
 | EUVD-2026-23846 | 20 Apr 202615:31 | – | euvd |
 | Apache Kafka does not validate JWT tokens in its OAUTHBEARER authentication implementation | 20 Apr 202615:31 | – | github |
 | CVE-2026-33557 | 20 Apr 202614:16 | – | nvd |
 | BIT-KAFKA-2026-33557 Apache Kafka: Missing JWT token validation in OAUTHBEARER authentication | 22 Apr 202608:40 | – | osv |
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08 Jul 2026 00:00Current
5.9Medium risk
Vulners AI Score5.9
CVSS 39.1
CVSS 29.4
EPSS0.00581