CVE-2021-29440 is a Server-Side Template Injection (SSTI) vulnerability affecting Grav, a file-based web platform, specifically versions prior to 1.7.11. This flaw allows authenticated administrative users with page creation/editing privileges to achieve arbitrary code execution and privilege escalation by injecting malicious Twig code into static pages. The vulnerability carries a CVSS score of 7.2 (High) due to its low attack complexity and high impact on confidentiality, integrity, and availability. While not listed in CISA's KEV catalog, an exploit is publicly available on ExploitDB, though there is minimal community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.7.11CPE matchmatch criteria | cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.3 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.