CVE-2026-40783Network attack vector

Contributor-level remote code execution

Published Jun 17, 2026 · Updated Jun 17, 2026

Code injection in Creative Themes Blocksy Companion Pro 2.1.37 and earlier allows remote authenticated users to execute server-side code. Patchstack and Wordfence have not published the affected function, request parameter, or unsafe code-generation operation. Contributor-level WordPress access is required; successful exploitation runs code in the web server context and can compromise site data and availability.

CVSS severity9.9
Critical
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Code injection in Creative Themes Blocksy Companion Pro 2.1.37 and earlier allows remote authenticated users to execute server-side code. Patchstack and Wordfence have not published the affected function, request parameter, or unsafe code-generation operation. Contributor-level WordPress access is required; successful exploitation runs code in the web server context and can compromise site data and availability.

The record

CVE
CVE-2026-40783
Published
Jun 17, 2026
Updated
Jun 17, 2026
Vendor
Creative Themes
Product
Blocksy Companion Pro
Classifications
CWE-94, CAPEC-253, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=2.1.37 changes=[{"at":"2.1.38","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Creative Themes · Blocksy Companion Proversion=n/a <=2.1.37 changes=[{"at":"2.1.38","status":"unaffected"}]

Published CVSS scores

9.9PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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.

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-94Improper Control of Generation of Code ('Code Injection')
CAPEC-253Remote Code Inclusion
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo