CVE-2026-41518Public exploitNetwork attack vector

Stored DOM XSS via tooltip innerHTML

Published Jun 4, 2026 · Updated Jun 4, 2026

Stored DOM XSS in Chartbrew 4.9.0 through 5.0.0 allows remote authenticated users to execute JavaScript in public-dashboard viewers. ChartTooltip.js inserts the stored ChartDatasetConfig.legend value into a template string and assigns it to tooltipEl.innerHTML without sanitization. Project-editor access is required to plant the payload; loading the public dashboard then runs it in each viewer's browser origin.

CVSS severity7.6
High
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored DOM XSS in Chartbrew 4.9.0 through 5.0.0 allows remote authenticated users to execute JavaScript in public-dashboard viewers. ChartTooltip.js inserts the stored ChartDatasetConfig.legend value into a template string and assigns it to tooltipEl.innerHTML without sanitization. Project-editor access is required to plant the payload; loading the public dashboard then runs it in each viewer's browser origin.

The record

CVE
CVE-2026-41518
Published
Jun 4, 2026
Updated
Jun 4, 2026
Vendor
Chartbrew
Product
Chartbrew
Classifications
CWE-79
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 4, 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=>= 4.9.0, < 5.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Chartbrew · Chartbrewversion=>= 4.9.0, < 5.0.1

Published CVSS scores

7.6GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

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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