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CVE-2026-82438: Apache Storm Webapp: Authenticated API Responses Exposed to Arbitrary Web Origins

Three CORS misconfigurations in Apache Storm 3.0.0 let malicious web pages from arbitrary origins read authenticated API responses.

CVE-2026-82438 (severity: important) affects Apache Storm Webapp (storm-webapp) versions 3.0.0 before 3.1.0. Three separate mechanisms allowed a web page on an unrelated origin to read responses served to authenticated users, including the Logviewer reflecting the request's Origin header in Access-Control-Allow-Origin while also sending Access-Control-Allow-Credentials. This enables a malicious site to silently exfiltrate authenticated Storm API and log data from a victim's browser session.

oss-security · 2d agoVulnerabilityCVE-2026-824381

CVE-2026-84179: Apache Storm Nimbus, Apache Storm UI: Disclosure of Unredacted Merged Daemon Configuration via the Topology Page

Apache Storm Nimbus/UI 3.0.0 leaks unredacted merged daemon configuration through the topology page, exposing secrets to UI users.

CVE-2026-84179 (severity: important) affects Apache Storm Nimbus (storm-server) and Storm UI (storm-webapp) versions 3.0.0 before 3.1.0. The getTopologyPageInfo function merged the Nimbus daemon configuration with topology configuration and returned it unredacted in the topology_conf field of TopologyPageInfo, which the Storm UI copied verbatim. This can expose sensitive daemon configuration values to topology users.

oss-security · 2d agoVulnerabilityCVE-2026-84179

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

Apache Storm Logviewer ignores logs.users and logs.groups ACLs for daemon logs, letting unauthorized users read sensitive logs.

CVE-2026-82437 (severity: moderate) affects Apache Storm Logviewer (storm-webapp) versions 3.0.0 before 3.1.0. The Logviewer offers logs.users and logs.groups settings for operators to control who may read log content, but for daemon logs the access decision combined the "this is a daemon log" flag with the authorizer result in a way that discarded the authorizer's answer. As a result, configured access controls were not enforced and unauthorized users could read daemon log content.

oss-security · 2d agoVulnerabilityCVE-2026-82437

CVE-2026-82433: Apache Storm Nimbus, Apache Storm UI: Disclosure of Unredacted Daemon Configuration via Nimbus and the UI

Apache Storm Nimbus and UI return unredacted daemon configuration, including ZooKeeper and keystore secrets, to authorized users.

CVE-2026-82433 (rated moderate) affects Apache Storm Nimbus (storm-server) and Storm UI (storm-webapp) versions 3.0.0 before 3.1.0. The getNimbusConf operation returned the complete daemon configuration without redaction after only a user-level authorization check. Where configured, the response includes storm.zookeeper.auth.payload plus keystore and related secrets.

oss-security · 2d agoVulnerabilityCVE-2026-82433