CVE-2026-86784Network attack vectorHinoki check available

Contributor-level stored XSS via unescaped JSON credentials

Published Sep 16, 2026 · Updated Sep 16, 2026

Stored cross-site scripting in Visualizer before 4.0.8 allows remote authenticated users to execute JavaScript through saved JSON chart credentials. The chart editor returns the saved JSON data-source configuration without sanitizing or escaping attacker-controlled credential fields before inserting them into the page. Contributor access is required to store the payload, and execution occurs when a higher-privileged user reviews the affected chart.

CVSS severityUnavailable
Unscored
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Stored cross-site scripting in Visualizer before 4.0.8 allows remote authenticated users to execute JavaScript through saved JSON chart credentials. The chart editor returns the saved JSON data-source configuration without sanitizing or escaping attacker-controlled credential fields before inserting them into the page. Contributor access is required to store the payload, and execution occurs when a higher-privileged user reviews the affected chart.

The record

CVE
CVE-2026-86784
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
Query Solutions Ltd.
Product
Visualizer
Classifications
T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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 <4.0.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Query Solutions Ltd. · Visualizerversion=0 <4.0.8

Published CVSS scores

No CVSS assessment is available in this record.

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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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