CVSS 3.1
8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2021-29454
High (8.8). EPSS 1.8% chance of exploitation in the next 30 days.
Smarty is a template engine for PHP, facilitating the separation of presentation (HTML/CSS) from application logic. Prior to versions 3.1.42 and 4.0.2, template authors could run arbitrary PHP code by crafting a malicious math string. If a math string was passed through as user provided data to the math function, external users could run arbitrary PHP code by crafting a malicious math string. Users should upgrade to version 3.1.42 or 4.0.2 to receive a patch.
Severity
- EPSS
- 1.8% chance of exploitation in the next 30 days; higher than 78% of CVEs (scores of 2026-10-31)
- CWE
- CWE-74
- Published
- Modified
- Record from
- the NVD, synced
Affected
- debian:debian_linux
- fedoraproject:fedora
- smarty:smarty
References
- https://github.com/smarty-php/smarty/commit/215d81a9fa3cd63d82fb3ab56ecaf97cf1e7db71
- https://github.com/smarty-php/smarty/releases/tag/v3.1.42
- https://github.com/smarty-php/smarty/releases/tag/v4.0.2
- https://github.com/smarty-php/smarty/security/advisories/GHSA-29gp-2c3m-3j6m
- https://lists.debian.org/debian-lts-announce/2022/05/msg00005.html