CVE-2026-2826Network attack vector

Contributor-level media uploads via missing capability check

Published Apr 4, 2026 · Updated Apr 4, 2026

Authorization bypass in Kadence Blocks 3.6.3 and earlier allows remote authenticated users to upload images through a REST endpoint. The process_pattern handler accepts remote image URLs and creates Media Library attachments without verifying the upload_files capability. Contributor-level access is required, and the bounded impact is unauthorized image creation in the site's WordPress Media Library.

CVSS severity4.3
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Kadence Blocks 3.6.3 and earlier allows remote authenticated users to upload images through a REST endpoint. The process_pattern handler accepts remote image URLs and creates Media Library attachments without verifying the upload_files capability. Contributor-level access is required, and the bounded impact is unauthorized image creation in the site's WordPress Media Library.

The record

CVE
CVE-2026-2826
Published
Apr 4, 2026
Updated
Apr 4, 2026
Vendor
Liquid Web
Product
Kadence Blocks
Classifications
CWE-862, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 4, 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 <=3.6.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Liquid Web · Kadence Blocksversion=0 <=3.6.3

Published CVSS scores

4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:L/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 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-862Missing Authorization
T1190Exploit Public-Facing Application

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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