CVE-2026-79988
Authenticated RCE through Twig sandbox escape
Description
The Twig sandbox mechanism in Craft CMS is configured to allow dangerous functionality from the Yii framework, leading to authenticated RCE similar to previously disclosed vulnerabilities.
INFO
Published Date :
Aug. 27, 2026, 5:20 p.m.
Last Modified :
Aug. 27, 2026, 5:20 p.m.
Remotely Exploit :
Yes !
Source :
7004884b-51e2-48e8-b4a2-5ca29e80453e
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | HIGH | 7004884b-51e2-48e8-b4a2-5ca29e80453e | ||||
| CVSS 4.0 | HIGH | 7004884b-51e2-48e8-b4a2-5ca29e80453e |
Solution
- Review and restrict Twig sandbox configurations.
- Update Craft CMS to the latest version.
- Apply necessary security patches for Yii.
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-2026-79988.
| URL | Resource |
|---|---|
| https://github.com/craftcms/cms | |
| https://github.com/craftcms/cms/releases/tag/5.10.7 | |
| https://www.hckrt.com/hacktivity/HCKRT-8RQQ7K |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-79988 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-2026-79988
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-2026-79988 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-79988 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. 27, 2026
Action Type Old Value New Value Added Description The Twig sandbox mechanism in Craft CMS is configured to allow dangerous functionality from the Yii framework, leading to authenticated RCE similar to previously disclosed vulnerabilities. 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-693 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/79xxx/CVE-2026-79988.json">CVE-2026-79988</a> Added Reference https://github.com/craftcms/cms Added Reference https://github.com/craftcms/cms/releases/tag/5.10.7 Added Reference https://www.hckrt.com/hacktivity/HCKRT-8RQQ7K