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CVE-2026-82437— Apache Storm Logviewer: Log Access Controls Not Enforced by Logviewer

Quick assessment

Affected
Apache Software Foundation Apache Storm Logviewer
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

漏洞描述 Logviewer 提供了 和 配置项，以便操作员可以控制谁有权读取日志内容。但对于守护进程（daemon）日志，这些设置并未生效：访问控制逻辑将“这是守护进程日志”标志与授权器（authorizer）的结果结合时，只要该标志被设置，授权器的判断结果就会被丢弃；并且，守护进程日志页面及下载端点在到达处理程序（handler）时，完全没有咨询授权器。因此，任何能够通过已配置的 Servlet 过滤器的用户，都能在每一个可达节点上读取 、 以及其他守护进程日志，其中包含其他租户的拓扑名称、所有者以及配置片段。

AI Predicted 5.5 Difficulty: Trivial

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-82437

Vulnerability Information
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Vulnerability Title
Apache Storm Logviewer: Log Access Controls Not Enforced by Logviewer
Source: CVE Program / CVE List V5
Vulnerability Description
Description The Logviewer offers `logs.users` and `logs.groups` so operators can control who may read log content. For daemon logs those settings were not applied: the access decision combined the "this is a daemon log" flag with the authorizer result in a way that discarded the authorizer's answer whenever the flag was set, and the daemon log page and download endpoints reached the handler without consulting an authorizer at all. Any user able to pass the configured servlet filter could therefore read `nimbus.log`, `supervisor.log` and the other daemon logs on every reachable node, which contain other tenants' topology names, owners and configuration fragments. The same advisory covers the log listing endpoints, which accepted a user argument and never applied it, so `/listLogs` and `/searchLogs` returned every tenant's topology and worker log file names regardless of the caller. That part is metadata only. There was no configuration that closed either behaviour. Mitigation Upgrade to 3.1.0, where the daemon log paths evaluate the same configured user and group lists that the worker log paths already used, and the listing endpoints filter by the requesting user. Users who cannot upgrade immediately should place the Logviewer behind a reverse proxy that restricts the daemon log endpoints, and should treat daemon log content as readable by any filter-authenticated user. Credit The ASF -- found using Claude agents to study the security of open-source projects, validated and reported by Apache Storm.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Storm Logviewer 3.0.0 ~ 3.1.0 -

II. Public POCs for CVE-2026-82437

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III. Intelligence Information for CVE-2026-82437

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Mailing List Discussions for CVE-2026-82437 (1)

Same Patch Batch · Apache Software Foundation · 2026-09-14 · 39 CVEs total

CVE-2026-82434 10.0 CRITICAL Apache Storm Nimbus, Apache Storm Client: Disclosure of the Topology ZooKeeper Credential
CVE-2026-78330 Apache Syncope: Privilege escalation for admin user via JWT authentication
CVE-2026-73579 Apache Syncope: Non-recursive Any search could skip Realms restrictions
CVE-2026-75015 Apache Syncope: Nested secrets leak cleartext into audit records readable
CVE-2026-75030 Apache Syncope: Incomplete authorization checks for Group members deprovisioning
CVE-2026-77051 Apache Syncope: SQL injection via unsanitized entityKey and opEvent in Audit Events search
CVE-2026-73668 Apache Syncope: Cross-realm disclosure of confidential ConnId bundles configuration values
CVE-2026-77147 Apache Syncope: Groovy Sandbox escape for empty CommandArgs
CVE-2026-77181 Apache Syncope: ClientApp update entitlement not effective
CVE-2026-77883 Apache Syncope: Information disclosure via one-hop JEXL navigation past the JexlContextBui
CVE-2026-78318 Apache Syncope: Unauthenticated reflected XSS in Console and Enduser
CVE-2026-73470 Apache Syncope: Delegating users can grant unowned Roles
CVE-2026-78336 Apache Syncope: OIDCC4UI provider list discloses client secrets to any authenticated user
CVE-2026-82232 Apache Syncope: SQL injection via sort parameter in Task search
CVE-2026-86460 Apache Syncope: Cypher Injection via FIQL Search on Neo4j Persistence
CVE-2026-87779 Apache Syncope: AES Secret Key disclosure via log output
CVE-2026-87785 Apache Syncope: JWT subject spoofing
CVE-2026-87802 Apache Syncope: SRA OAuth2 JWT signature verification bypass
CVE-2026-68570 Apache Doris: Authorization bypass leading to unauthorized data access
CVE-2026-72524 Apache Doris: Authorization bypass allowing a low-privilege user to read/write/drop arbitr

Showing top 20 of 39 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same vendor: Apache Software Foundation
Same weakness: CWE-862

V. Comments for CVE-2026-82437

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