Auth bypass in Openzipkin Zipkin
CVE-2026-82265
Zipkin through 3.6.1 exposes Spring Boot Actuator endpoints on the tracing API port without authentication, allowing unauthenticated attackers to access sensitive information. Attackers can read environment variables, bean configurations, and storage credentials via actuator endpoints, or modify log levels to suppress logging.
Vulnerability class: Broken Authentication
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
Affected products
Weakness classification (CWE)
References
- disclosure@vulncheck.com (issue-tracking)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (technical-description)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-82265?
- CVE-2026-82265 is a medium-severity vulnerability in Openzipkin Zipkin, classified under Missing Authentication for Critical Function. CVSS score: 6.5/10. Published 2026-08-28.
- How severe is CVE-2026-82265?
- Medium severity. CVSS v3 base score is 6.5 out of 10.