CVE-2026-1913Network attack vector

Stored XSS via unescaped shortcode prefix

Published Apr 22, 2026 · Updated Apr 22, 2026

Stored XSS in Gallagher Website Design 2.6.4 and earlier allows remote authenticated users to inject scripts through a shortcode. The login_link shortcode emits the attacker-controlled prefix attribute into generated anchor output without sufficient input sanitization or contextual output escaping. Contributor-level access is required to save the payload in a page, and the script executes in each visitor's browser, enabling actions within that visitor's session.

CVSS severity6.4
Medium
EPSS probability0.25%
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 Gallagher Website Design 2.6.4 and earlier allows remote authenticated users to inject scripts through a shortcode. The login_link shortcode emits the attacker-controlled prefix attribute into generated anchor output without sufficient input sanitization or contextual output escaping. Contributor-level access is required to save the payload in a page, and the script executes in each visitor's browser, enabling actions within that visitor's session.

The record

CVE
CVE-2026-1913
Published
Apr 22, 2026
Updated
Apr 22, 2026
Vendor
Gallagher Website Design
Product
Gallagher Website Design
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 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 <=2.6.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Gallagher Website Design · Gallagher Website Designversion=0 <=2.6.4

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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')
T1203Exploitation for Client Execution

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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