CVE-2026-82265Public exploitNetwork attack vectorHinoki check available

Unauthenticated disclosure and logging suppression via Actuator

Published Aug 28, 2026 · Updated Aug 28, 2026

Missing authentication in OpenZipkin Zipkin 3.6.1 and earlier allows remote attackers to disclose configuration and suppress logging. zipkin-server-shared.yml enables environment, beans, thread-dump, configuration-properties, and loggers Actuator endpoints with wildcard web exposure on port 9411 but defines no Spring Security or Armeria authentication gate. Network access to the tracing API is sufficient; storage credentials outside Spring's sanitization patterns are exposed, and the root logger can be set to OFF.

CVSS severity6.5
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Missing authentication in OpenZipkin Zipkin 3.6.1 and earlier allows remote attackers to disclose configuration and suppress logging. zipkin-server-shared.yml enables environment, beans, thread-dump, configuration-properties, and loggers Actuator endpoints with wildcard web exposure on port 9411 but defines no Spring Security or Armeria authentication gate. Network access to the tracing API is sufficient; storage credentials outside Spring's sanitization patterns are exposed, and the root logger can be set to OFF.

The record

CVE
CVE-2026-82265
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
OpenZipkin
Product
Zipkin
Classifications
CWE-306, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=3.6.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenZipkin · Zipkinversion=0 <=3.6.1

Published CVSS scores

6.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
6.9VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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