CVE-2026-18316Network attack vector

Subscriber content deletion via import_zip capability omission

Published Aug 16, 2026 · Updated Aug 16, 2026

Missing authorization in SolaceWP Solace Extra 1.6.0 and earlier allows remote authenticated users to delete site content through import_zip. The action-import-zip AJAX handler accepts a nonce exposed on every admin page, but import_zip performs no capability check before clearing menus, widgets, theme modifications, and Elementor templates or starting a demo import. Subscriber-level access is sufficient to obtain the nonce; successful requests destroy or replace site configuration and content without granting code execution.

CVSS severity9.1
Critical
EPSS probability0.32%
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 SolaceWP Solace Extra 1.6.0 and earlier allows remote authenticated users to delete site content through import_zip. The action-import-zip AJAX handler accepts a nonce exposed on every admin page, but import_zip performs no capability check before clearing menus, widgets, theme modifications, and Elementor templates or starting a demo import. Subscriber-level access is sufficient to obtain the nonce; successful requests destroy or replace site configuration and content without granting code execution.

The record

CVE
CVE-2026-18316
Published
Aug 16, 2026
Updated
Aug 16, 2026
Vendor
SolaceWP
Product
Solace Extra
Classifications
CWE-862, T1485
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 16, 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 <=1.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

SolaceWP · Solace Extraversion=0 <=1.6.0

Published CVSS scores

9.1WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

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-862Missing Authorization
T1485Data Destruction

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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