CVE-2026-16655Network attack vector

Unauthenticated stored XSS via nested password member

Published Jul 29, 2026 · Updated Jul 29, 2026

Stored XSS in WPManageNinja Fluent Forms 6.2.7 and earlier allows remote attackers to inject scripts through a nested Name-field password member. The submission path accepts the nested password value without sufficient sanitization and later renders stored form data without adequate output escaping. No account is required; the script runs when a user opens a page containing the injected submission, enabling browser-context data access and page modification.

CVSS severity7.2
High
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in WPManageNinja Fluent Forms 6.2.7 and earlier allows remote attackers to inject scripts through a nested Name-field password member. The submission path accepts the nested password value without sufficient sanitization and later renders stored form data without adequate output escaping. No account is required; the script runs when a user opens a page containing the injected submission, enabling browser-context data access and page modification.

The record

CVE
CVE-2026-16655
Published
Jul 29, 2026
Updated
Jul 29, 2026
Vendor
Mahmudul Hasan Arif
Product
Fluent Forms
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 29, 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 <=6.2.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mahmudul Hasan Arif · Fluent Formsversion=0 <=6.2.7

Published CVSS scores

7.2WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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