CVE-2026-1099Network attack vector

Stored XSS via unescaped shortcode attributes

Published Jan 24, 2026 · Updated Jan 24, 2026

Stored XSS in shazdeh Administrative Shortcodes 0.3.4 and earlier allows remote authenticated users to inject scripts through shortcode attributes. The login and logout shortcode handlers place attribute values into generated page output without sufficient sanitization or context-appropriate escaping. Contributor-level access is required; injected scripts persist in page content and execute in the browser whenever an affected page is viewed.

CVSS severity6.4
Medium
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

Stored XSS in shazdeh Administrative Shortcodes 0.3.4 and earlier allows remote authenticated users to inject scripts through shortcode attributes. The login and logout shortcode handlers place attribute values into generated page output without sufficient sanitization or context-appropriate escaping. Contributor-level access is required; injected scripts persist in page content and execute in the browser whenever an affected page is viewed.

The record

CVE
CVE-2026-1099
Published
Jan 24, 2026
Updated
Jan 24, 2026
Vendor
shazdeh
Product
Administrative Shortcodes
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 24, 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=* <=0.3.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

shazdeh · Administrative Shortcodesversion=* <=0.3.4

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.

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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
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.

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Technologies

Your stack

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Your stack

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