CVE-2026-78416
Authenticated RCE via `condition.config` JSON cleanse bypass
Description
Craft CMS versions from 4.0.0-RC1 before 4.18.2 and from 5.0.0-RC1 before 5.10.6 contain an authenticated remote code execution vulnerability in control panel element-search condition handling. A JSON cleanse bypass in condition.config allows Yii behavior/event configuration keys to be interpreted after decoding, enabling command execution as the PHP/web user.
INFO
Published Date :
Aug. 24, 2026, 4:17 p.m.
Last Modified :
Aug. 24, 2026, 4:17 p.m.
Remotely Exploit :
Yes !
Source :
7004884b-51e2-48e8-b4a2-5ca29e80453e
Affected Products
The following products are affected by CVE-2026-78416
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | HIGH | 7004884b-51e2-48e8-b4a2-5ca29e80453e | ||||
| CVSS 4.0 | HIGH | 7004884b-51e2-48e8-b4a2-5ca29e80453e |
Solution
- Update Craft CMS to version 4.18.2 or later.
- Update Craft CMS to version 5.10.6 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-78416.
| URL | Resource |
|---|---|
| https://github.com/craftcms/cms/releases/tag/5.10.6 | |
| https://www.hckrt.com/hacktivity/HCKRT-JD662P |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-78416 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-78416
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-78416 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-78416 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 7004884b-51e2-48e8-b4a2-5ca29e80453e
Aug. 24, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'craftcms', 'product': 'cms', 'versions': [{'status': 'affected', 'version': '4.0.0-RC1', 'lessThan': '4.18.2', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.0.0-RC1', 'lessThan': '5.10.6', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}] Added Description Craft CMS versions from 4.0.0-RC1 before 4.18.2 and from 5.0.0-RC1 before 5.10.6 contain an authenticated remote code execution vulnerability in control panel element-search condition handling. A JSON cleanse bypass in condition.config allows Yii behavior/event configuration keys to be interpreted after decoding, enabling command execution as the PHP/web user. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-915 Added Reference https://github.com/craftcms/cms/releases/tag/5.10.6 Added Reference https://www.hckrt.com/hacktivity/HCKRT-JD662P -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 24, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-78416', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-24T15:53:56.202088Z'}