CVE-2026-3718Network attack vector

Unauthenticated stored XSS via MWP-Key-Name header

Published May 14, 2026 · Updated May 14, 2026

Stored XSS in ManageWP Worker 4.9.31 and earlier allows remote attackers to inject scripts through the MWP-Key-Name HTTP header. The plugin stores this unsanitized communication-header value in the database and outputs it without escaping on the connection management page. No authentication is required to plant the payload, but execution occurs only when an administrator opens that page with debug parameters.

CVSS severity7.2
High
EPSS probability0.26%
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 ManageWP Worker 4.9.31 and earlier allows remote attackers to inject scripts through the MWP-Key-Name HTTP header. The plugin stores this unsanitized communication-header value in the database and outputs it without escaping on the connection management page. No authentication is required to plant the payload, but execution occurs only when an administrator opens that page with debug parameters.

The record

CVE
CVE-2026-3718
Published
May 14, 2026
Updated
May 14, 2026
Vendor
GoDaddy Inc.
Product
ManageWP Worker
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 14, 2026CVE publishedPublication date reported by the CVE source.
  2. May 14, 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 <=4.9.31

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GoDaddy Inc. · ManageWP Workerversion=0 <=4.9.31

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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