CVE-2026-12349Network attack vector

Unauthenticated sidebar modification via unchecked AJAX handlers

Published Jun 30, 2026 · Updated Jun 30, 2026

Missing authorization in Premium Addons for KingComposer 1.1.1 and earlier allows remote attackers to create or delete custom sidebars via AJAX. The add_custom_sidebar() and remove_custom_sidebar() handlers use unauthenticated wp_ajax_nopriv_* hooks and pass requests to update_option() without capability checks. No account or user interaction is required; deletion can unregister widget areas and stop assigned widgets from rendering.

CVSS severity5.3
Medium
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Premium Addons for KingComposer 1.1.1 and earlier allows remote attackers to create or delete custom sidebars via AJAX. The add_custom_sidebar() and remove_custom_sidebar() handlers use unauthenticated wp_ajax_nopriv_* hooks and pass requests to update_option() without capability checks. No account or user interaction is required; deletion can unregister widget areas and stop assigned widgets from rendering.

The record

CVE
CVE-2026-12349
Published
Jun 30, 2026
Updated
Jun 30, 2026
Vendor
octagonwebstudio
Product
Premium Addons for KingComposer
Classifications
CWE-862, T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 30, 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 <=1.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

octagonwebstudio · Premium Addons for KingComposerversion=0 <=1.1.1

Published CVSS scores

5.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1565.001Stored Data Manipulation

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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