CVE-2026-73393Network attack vector

Unauthenticated script execution in visitor browsers

Published Aug 18, 2026 · Updated Aug 18, 2026

Cross-site scripting in weDevs Subscribe2 through 10.46 allows remote attackers to execute script in a visitor browser via its public subscription functionality. Public CVE and Patchstack records identify an unauthenticated XSS flaw but do not disclose the vulnerable parameter, output sink, or escaping failure that causes the script reflection. Exposure depends on whether the plugin's public subscription surface is reachable, and the available records do not show server-side code execution or direct data modification.

CVSS severity7.1
High
EPSS probability0.24%
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 weDevs Subscribe2 through 10.46 allows remote attackers to execute script in a visitor browser via its public subscription functionality. Public CVE and Patchstack records identify an unauthenticated XSS flaw but do not disclose the vulnerable parameter, output sink, or escaping failure that causes the script reflection. Exposure depends on whether the plugin's public subscription surface is reachable, and the available records do not show server-side code execution or direct data modification.

The record

CVE
CVE-2026-73393
Published
Aug 18, 2026
Updated
Aug 18, 2026
Vendor
HappyMonster
Product
Subscribe2
Classifications
CWE-79
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 18, 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 <=10.46

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

HappyMonster · Subscribe2version=n/a <=10.46

Published CVSS scores

7.1CVE ProgramCVSS: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')

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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