CVE-2026-66616Network attack vector

Stored XSS against page viewers

Published Aug 20, 2026 · Updated Aug 20, 2026

Cross-site scripting in Form Maker by 10Web through 1.15.46 allows remote attackers to execute script in a victim's browser via unspecified vectors. Patchstack, NVD, and the plugin changelog confirm the issue class, affected range, and user-interaction requirement, but the public records do not identify the vulnerable field, request parameter, or output path that fails to neutralize attacker-controlled input. No authentication is required to plant the payload, but exploitation still depends on a user loading the affected page; the published record supports browser-side script execution and related content manipulation, not server-side code execution.

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

Cross-site scripting in Form Maker by 10Web through 1.15.46 allows remote attackers to execute script in a victim's browser via unspecified vectors. Patchstack, NVD, and the plugin changelog confirm the issue class, affected range, and user-interaction requirement, but the public records do not identify the vulnerable field, request parameter, or output path that fails to neutralize attacker-controlled input. No authentication is required to plant the payload, but exploitation still depends on a user loading the affected page; the published record supports browser-side script execution and related content manipulation, not server-side code execution.

The record

CVE
CVE-2026-66616
Published
Aug 20, 2026
Updated
Aug 20, 2026
Vendor
10Web
Product
Form Maker
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 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 <=1.15.46

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

10Web · Form Makerversion=n/a <=1.15.46

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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
T1059.007JavaScript

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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