CVE-2026-97723Network attack vector

Stored JavaScript execution via unescaped URL quotes

Published Sep 25, 2026 · Updated Sep 25, 2026

Stored XSS in Madpsy UberSDR before 0.1.58 allows remote attackers to execute JavaScript in another user's browser through a chat URL. The chat linkifier inserts user-controlled URL text into an HTML href attribute without neutralizing quotation marks, allowing the URL to terminate the attribute and add event-handler markup. Execution occurs when another user renders the stored message; clicking the link is unnecessary, and the resulting script runs in that user's browser context.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Madpsy UberSDR before 0.1.58 allows remote attackers to execute JavaScript in another user's browser through a chat URL. The chat linkifier inserts user-controlled URL text into an HTML href attribute without neutralizing quotation marks, allowing the URL to terminate the attribute and add event-handler markup. Execution occurs when another user renders the stored message; clicking the link is unnecessary, and the resulting script runs in that user's browser context.

The record

CVE
CVE-2026-97723
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
Madpsy
Product
UberSDR
Classifications
T1059.007
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 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 <0.1.58

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Madpsy · UberSDRversion=0 <0.1.58

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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1059.007Command and Scripting Interpreter: JavaScript

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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