CVE-2018-7600Known exploitationPublic exploitNetwork attack vectorHinoki check available

Unauthenticated code execution via Forms API property injection

Published Mar 29, 2018 · Updated Oct 21, 2025

Property injection in Drupal Core's Forms API allows remote attackers to execute arbitrary code through crafted HTTP requests. Request processing accepts hash-prefixed input keys as render-array properties, including #post_render callbacks, and invokes attacker-selected functions. Default or common module configurations expose this behavior without authentication or user interaction, allowing compromise within the PHP process's permissions.

CVSS severity9.8
Critical
EPSS probability99.99%
Next 30 days · Nov 1, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Property injection in Drupal Core's Forms API allows remote attackers to execute arbitrary code through crafted HTTP requests. Request processing accepts hash-prefixed input keys as render-array properties, including #post_render callbacks, and invokes attacker-selected functions. Default or common module configurations expose this behavior without authentication or user interaction, allowing compromise within the PHP process's permissions.

The record

CVE
CVE-2018-7600
Published
Mar 29, 2018
Updated
Oct 21, 2025
Vendor
Organic Groups Project
Product
Drupal Core
Classifications
CWE-20, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 29, 2018CVE publishedPublication date reported by the CVE source.
  2. Apr 11, 2018Exploitation reportedAutomated attacks against vulnerable Drupal sites
  3. Oct 21, 2025Record 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=Drupal before 7.58, 8.x before 8.3.9, 8.4.x before 8.4.6, and 8.5.x before 8.5.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Organic Groups Project · Drupal Coreversion=Drupal before 7.58, 8.x before 8.3.9, 8.4.x before 8.4.6, and 8.5.x before 8.5.1

Published CVSS scores

9.8GitHub Advisory DatabaseCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H
9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsShadowserver observations through Sep 28, 2026. Gaps indicate unavailable data.
Sep 22, 2026Sep 28, 2026
View daily counts
Reporting dayUnique IPs
Sep 22, 20264
Sep 23, 20261
Sep 24, 20266
Sep 25, 20263
Sep 26, 20262
Sep 27, 20263
Sep 28, 20263
Latest reporting daySep 28, 2026
Latest daily unique IPs3
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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