CVE-2021-21408 is a high-severity vulnerability affecting Smarty, a PHP template engine, specifically versions prior to 3.1.43 and 4.0.3. It allows authenticated template authors to execute restricted static PHP methods, impacting confidentiality, integrity, and availability of affected systems, including various Debian and Fedora distributions. With a CVSS score of 8.8, this vulnerability is easily exploitable over the network with low attack complexity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 3.1.43CPE matchmatch criteria | cpe:2.3:a:smarty:smarty:*:*:*:*:*:*:*:* | ||
>= 4.0.0, < 4.0.3CPE matchmatch criteria | cpe:2.3:a:smarty:smarty:*:*:*:*:*:*:*:* | ||
9.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | ||
10.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | ||
11.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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.