Vulnerability-Lookup

CVE-2026-35565 (GCVE-0-2026-35565)

Vulnerability from cvelistv5 – Published: 2026-04-13 09:10 – Updated: 2026-04-13 14:10

Title

Apache Storm UI: Stored Cross-Site Scripting (XSS) via Unsanitized Topology Metadata in Storm UI

Summary

Stored Cross-Site Scripting (XSS) via Unsanitized Topology Metadata in Apache Storm UI Versions Affected: before 2.8.6 Description: The Storm UI visualization component interpolates topology metadata including component IDs, stream names, and grouping values directly into HTML via innerHTML in parseNode() and parseEdge() without sanitization at any layer. An authenticated user with topology submission rights could craft a topology containing malicious HTML/JavaScript in component identifiers (e.g., a bolt ID containing an onerror event handler). This payload flows through Nimbus → Thrift → the Visualization API → vis.js tooltip rendering, resulting in stored cross-site scripting. In multi-tenant deployments where topology submission is available to less-trusted users but the UI is accessed by operators or administrators, this enables privilege escalation through script execution in an admin's browser session. Mitigation: 2.x users should upgrade to 2.8.6. Users who cannot upgrade immediately should monkey-patch the parseNode() and parseEdge() functions in the visualization JavaScript file to HTML-escape all API-supplied values including nodeId, :capacity, :latency, :component, :stream, and :grouping before interpolation into tooltip HTML strings, and should additionally restrict topology submission to trusted users via Nimbus ACLs as a defense-in-depth measure. A guide on how to do this is available in the release notes of 2.8.6. Credit: This issue was discovered while investigating another report by K.

Severity ?

No CVSS data available.

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

apache

References

URL

Tags

https://storm.apache.org/2026/04/12/storm286-rele…

vendor-advisory

Impacted products

	Vendor	Product	Version
	Apache Software Foundation	Apache Storm UI	Affected: 0 , < 2.8.6 (semver)

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-35565

Vulnerability from fkie_nvd - Published: 2026-04-13 10:16 - Updated: 2026-04-13 15:17

Severity ?

5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Summary

References

	URL	Tags
	security@apache.org	https://storm.apache.org/2026/04/12/storm286-released.html
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/04/12/7

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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  "descriptions": [
    {
      "lang": "en",
      "value": "Stored Cross-Site Scripting (XSS) via Unsanitized Topology Metadata in Apache Storm UI\n\n\nVersions Affected: before 2.8.6\n\n\nDescription: The Storm UI visualization component interpolates topology metadata including component IDs, stream names, and grouping values directly into HTML via innerHTML in parseNode() and parseEdge() without sanitization at any layer. An authenticated user with topology submission rights could craft a topology containing malicious HTML/JavaScript in component identifiers (e.g., a bolt ID containing an onerror event handler). This payload flows through Nimbus \u2192 Thrift \u2192 the Visualization API \u2192 vis.js tooltip rendering, resulting in stored cross-site scripting.\u00a0\n\nIn multi-tenant deployments where topology submission is available to less-trusted users but the UI is accessed by operators or administrators, this enables privilege escalation through script execution in an admin\u0027s browser session.\n\n\nMitigation:\u00a02.x users should upgrade to 2.8.6. Users who cannot upgrade immediately should monkey-patch the parseNode() and parseEdge() functions in the visualization JavaScript file to HTML-escape all API-supplied values including nodeId, :capacity, :latency, :component, :stream, and :grouping\u00a0before interpolation into tooltip HTML strings, and should additionally restrict topology submission to trusted users via Nimbus ACLs as a defense-in-depth measure.\u00a0A guide on how to do this is available in the release notes of 2.8.6.\n\nCredit: This issue was discovered while investigating another report by K."
    }
  ],
  "id": "CVE-2026-35565",
  "lastModified": "2026-04-13T15:17:33.953",
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GHSA-F2HP-QW27-8WFQ

Vulnerability from github – Published: 2026-04-13 12:31 – Updated: 2026-04-14 22:50

Summary

Apache Storm UI: Stored Cross-Site Scripting (XSS) via Unsanitized Topology Metadata

Details

Stored Cross-Site Scripting (XSS) via Unsanitized Topology Metadata in Apache Storm UI

Versions Affected: before 2.8.6

Description: The Storm UI visualization component interpolates topology metadata including component IDs, stream names, and grouping values directly into HTML via innerHTML in parseNode() and parseEdge() without sanitization at any layer. An authenticated user with topology submission rights could craft a topology containing malicious HTML/JavaScript in component identifiers (e.g., a bolt ID containing an onerror event handler). This payload flows through Nimbus → Thrift → the Visualization API → vis.js tooltip rendering, resulting in stored cross-site scripting.

In multi-tenant deployments where topology submission is available to less-trusted users but the UI is accessed by operators or administrators, this enables privilege escalation through script execution in an admin's browser session.

Mitigation: 2.x users should upgrade to 2.8.6. Users who cannot upgrade immediately should monkey-patch the parseNode() and parseEdge() functions in the visualization JavaScript file to HTML-escape all API-supplied values including nodeId, :capacity, :latency, :component, :stream, and :grouping before interpolation into tooltip HTML strings, and should additionally restrict topology submission to trusted users via Nimbus ACLs as a defense-in-depth measure. A guide on how to do this is available in the release notes of 2.8.6.

Credit: This issue was discovered while investigating another report by K.

Severity ?

5.4 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.storm:storm-webapp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.8.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-35565"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-14T22:50:39Z",
    "nvd_published_at": "2026-04-13T10:16:11Z",
    "severity": "MODERATE"
  },
  "details": "Stored Cross-Site Scripting (XSS) via Unsanitized Topology Metadata in Apache Storm UI\n\n\nVersions Affected: before 2.8.6\n\n\nDescription: The Storm UI visualization component interpolates topology metadata including component IDs, stream names, and grouping values directly into HTML via innerHTML in parseNode() and parseEdge() without sanitization at any layer. An authenticated user with topology submission rights could craft a topology containing malicious HTML/JavaScript in component identifiers (e.g., a bolt ID containing an onerror event handler). This payload flows through Nimbus \u2192 Thrift \u2192 the Visualization API \u2192 vis.js tooltip rendering, resulting in stored cross-site scripting.\u00a0\n\nIn multi-tenant deployments where topology submission is available to less-trusted users but the UI is accessed by operators or administrators, this enables privilege escalation through script execution in an admin\u0027s browser session.\n\n\nMitigation:\u00a02.x users should upgrade to 2.8.6. Users who cannot upgrade immediately should monkey-patch the parseNode() and parseEdge() functions in the visualization JavaScript file to HTML-escape all API-supplied values including nodeId, :capacity, :latency, :component, :stream, and :grouping\u00a0before interpolation into tooltip HTML strings, and should additionally restrict topology submission to trusted users via Nimbus ACLs as a defense-in-depth measure.\u00a0A guide on how to do this is available in the release notes of 2.8.6.\n\nCredit: This issue was discovered while investigating another report by K.",
  "id": "GHSA-f2hp-qw27-8wfq",
  "modified": "2026-04-14T22:50:39Z",
  "published": "2026-04-13T12:31:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35565"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/apache/storm"
    },
    {
      "type": "WEB",
      "url": "https://storm.apache.org/2026/04/12/storm286-released.html"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/04/12/7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": " Apache Storm UI: Stored Cross-Site Scripting (XSS) via Unsanitized Topology Metadata"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-35565 (GCVE-0-2026-35565)

FKIE_CVE-2026-35565

GHSA-F2HP-QW27-8WFQ

Tags

Sightings

Nomenclature