CVE-2021-29454 is a high-severity vulnerability affecting Smarty, a PHP template engine, prior to versions 3.1.42 and 4.0.2, as well as various Debian and Fedora distributions. It allows authenticated attackers to execute arbitrary PHP code by injecting malicious math strings into the math function. With a CVSS score of 8.8, this vulnerability presents a significant risk due to its low attack complexity and potential for complete compromise of confidentiality, integrity, and availability. While no public exploits or active exploitation have been observed, and community discussion is minimal, organizations using affected Smarty versions should prioritize upgrading to mitigate this critical risk.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 3.1.42CPE matchmatch criteria | cpe:2.3:a:smarty:smarty:*:*:*:*:*:*:*:* | ||
>= 4.0.0, < 4.0.2CPE 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:N/UI:R/S:U/C:H/I:H/A:N
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.