CVE-2023-39157Network attack vector

Authenticated code execution via unsafe callback dispatch

Published Dec 31, 2023 · Updated Apr 28, 2026

Code injection in Crocoblock JetElements 2.6.10 and earlier allows remote authenticated users to execute code on the WordPress server. The render_meta() function passes user-supplied callback data to call_user_func_array() without restricting which callable is invoked. Contributor-level access is sufficient, and successful exploitation runs code with the website's PHP privileges.

CVSS severity9.0
Critical
EPSS probability0.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Crocoblock JetElements 2.6.10 and earlier allows remote authenticated users to execute code on the WordPress server. The render_meta() function passes user-supplied callback data to call_user_func_array() without restricting which callable is invoked. Contributor-level access is sufficient, and successful exploitation runs code with the website's PHP privileges.

The record

CVE
CVE-2023-39157
Published
Dec 31, 2023
Updated
Apr 28, 2026
Vendor
Crocoblock
Product
JetElements
Classifications
CWE-94, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 31, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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=n/a <=2.6.10 changes=[{"at":"2.6.11","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Crocoblock · JetElementsversion=n/a <=2.6.10 changes=[{"at":"2.6.11","status":"unaffected"}]

Published CVSS scores

9.0PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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 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-94Improper Control of Generation of Code ('Code Injection')
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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