CVE-2026-13362Network attack vector

Contributor-level stored XSS via allow-list bypass

Published Aug 1, 2026 · Updated Aug 1, 2026

Stored XSS in SendPulse Email Marketing Newsletter 2.2.5 and earlier allows remote authenticated users to run scripts in visitors' browsers. The form-save path stores _sp_form_code after an allow-list check accepts a benign SendPulse loader tag alongside arbitrary HTML, and the [sendpulse-form] shortcode renders the stored value without adequate output escaping. Contributor-level access is required to create the sendpulse_form post; the payload runs when any user, including an administrator, previews or views a page containing the shortcode.

CVSS severity6.4
Medium
EPSS probability0.20%
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 SendPulse Email Marketing Newsletter 2.2.5 and earlier allows remote authenticated users to run scripts in visitors' browsers. The form-save path stores _sp_form_code after an allow-list check accepts a benign SendPulse loader tag alongside arbitrary HTML, and the [sendpulse-form] shortcode renders the stored value without adequate output escaping. Contributor-level access is required to create the sendpulse_form post; the payload runs when any user, including an administrator, previews or views a page containing the shortcode.

The record

CVE
CVE-2026-13362
Published
Aug 1, 2026
Updated
Aug 1, 2026
Vendor
SendPulse
Product
SendPulse Email Marketing Newsletter
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 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 <=2.2.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

SendPulse · SendPulse Email Marketing Newsletterversion=0 <=2.2.5

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

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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