CVE-2026-28697 describes a critical Server-Side Template Injection (SSTI) vulnerability affecting Craft CMS versions prior to 4.17.0-beta.1 and 5.9.0-beta.1. An authenticated administrator can inject malicious Twig template code into fields like Email Templates, enabling Remote Code Execution (RCE) by writing a PHP script to a web-accessible directory. This vulnerability carries a CVSS score of 9.1 (Critical), indicating a network-based attack with low complexity, requiring high privileges, and leading to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion, with one mention indicating awareness.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
> 4.0.0, < 4.17.0CPE matchmatch criteria | cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:* | ||
> 5.0.0, < 5.9.0CPE matchmatch criteria | cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:* | ||
4.0.0CPE matchmatch criteria | cpe:2.3:a:craftcms:craft_cms:4.0.0:-:*:*:*:*:*:* | ||
4.0.0CPE matchmatch criteria | cpe:2.3:a:craftcms:craft_cms:4.0.0:rc1:*:*:*:*:*:* | ||
4.0.0CPE matchmatch criteria | cpe:2.3:a:craftcms:craft_cms:4.0.0:rc2:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.7 Bluesky, 0.4 Mastodon, and 1.7 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.