CVE-2026-66449Network attack vector

Unauthenticated stored script execution in visitor browsers

Published Aug 13, 2026 · Updated Aug 13, 2026

Stored cross-site scripting in Dylan Kuhn Geo Mashup 1.13.18 and earlier allows remote attackers to inject scripts into site pages. Patchstack has not published the affected input, handler, or missing output-neutralization operation. Exploitation requires no account but does require a user to visit affected content, allowing script execution in that visitor’s browser context.

CVSS severity7.1
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Dylan Kuhn Geo Mashup 1.13.18 and earlier allows remote attackers to inject scripts into site pages. Patchstack has not published the affected input, handler, or missing output-neutralization operation. Exploitation requires no account but does require a user to visit affected content, allowing script execution in that visitor’s browser context.

The record

CVE
CVE-2026-66449
Published
Aug 13, 2026
Updated
Aug 13, 2026
Vendor
Dylan Kuhn
Product
Geo Mashup
Classifications
CWE-79, CAPEC-592
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 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=n/a <=1.13.18 changes=[{"at":"1.13.19","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Dylan Kuhn · Geo Mashupversion=n/a <=1.13.18 changes=[{"at":"1.13.19","status":"unaffected"}]

Published CVSS scores

7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS

Public exploit references

No public exploit references are available in this record.

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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