CVE-2021-24546Public exploitNetwork attack vector

Contributor-level PHP execution via conditional logic

Published Oct 11, 2021 · Updated Aug 3, 2024

Code injection in Munir Kamal EditorsKit before 1.31.6 allows remote authenticated users to execute arbitrary PHP through crafted block data. The Custom Visibility conditional-logic field accepts Gutenberg block attributes without sanitization or validation and evaluates them as PHP when a post is saved or previewed. Contributor-level permission to create or edit a post is sufficient, and injected code runs with the WordPress server process's access.

CVSS severity8.8
High
EPSS probability1.81%
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 Munir Kamal EditorsKit before 1.31.6 allows remote authenticated users to execute arbitrary PHP through crafted block data. The Custom Visibility conditional-logic field accepts Gutenberg block attributes without sanitization or validation and evaluates them as PHP when a post is saved or previewed. Contributor-level permission to create or edit a post is sufficient, and injected code runs with the WordPress server process's access.

The record

CVE
CVE-2021-24546
Published
Oct 11, 2021
Updated
Aug 3, 2024
Vendor
Munir Kamal
Product
EditorsKit
Classifications
CWE-94, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 11, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=1.31.6 <1.31.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Munir Kamal · EditorsKitversion=1.31.6 <1.31.6

Published CVSS scores

6.5NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
8.8NVDCVSS: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 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 exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1190Exploit Public-Facing Application

Public exploit references

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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