CVE-2021-29454

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.

• CWE-74
• CWE-74

• https://github.com/smarty-php/smarty/commit/215d81a9fa3cd63d82fb3ab56ecaf97cf1e7db71Patch, Third Party Advisory
• https://github.com/smarty-php/smarty/releases/tag/v3.1.42Release Notes, Third Party Advisory
• https://github.com/smarty-php/smarty/releases/tag/v4.0.2Release Notes, Third Party Advisory
• https://github.com/smarty-php/smarty/security/advisories/GHSA-29gp-2c3m-3j6mThird Party Advisory
• https://lists.debian.org/debian-lts-announce/2022/05/msg00005.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRAJVDRGCIY5UZ2PQHKDTT7RMKG6WJQQ/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L777JIBIWJV34HS7LXPIDWASG7TT4LNI/
• https://packagist.org/packages/smarty/smartyProduct, Third Party Advisory
• https://security.gentoo.org/glsa/202209-09Third Party Advisory
• https://www.debian.org/security/2022/dsa-5151Third Party Advisory
• https://www.smarty.net/docs/en/language.function.math.tplVendor Advisory
• https://github.com/smarty-php/smarty/commit/215d81a9fa3cd63d82fb3ab56ecaf97cf1e7db71Patch, Third Party Advisory
• https://github.com/smarty-php/smarty/releases/tag/v3.1.42Release Notes, Third Party Advisory
• https://github.com/smarty-php/smarty/releases/tag/v4.0.2Release Notes, Third Party Advisory
• https://github.com/smarty-php/smarty/security/advisories/GHSA-29gp-2c3m-3j6mThird Party Advisory
• https://lists.debian.org/debian-lts-announce/2022/05/msg00005.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRAJVDRGCIY5UZ2PQHKDTT7RMKG6WJQQ/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L777JIBIWJV34HS7LXPIDWASG7TT4LNI/
• https://packagist.org/packages/smarty/smartyProduct, Third Party Advisory
• https://security.gentoo.org/glsa/202209-09Third Party Advisory
• https://www.debian.org/security/2022/dsa-5151Third Party Advisory
• https://www.smarty.net/docs/en/language.function.math.tplVendor Advisory

Published

Jan 10, 2022

Last Modified

Jun 17, 2026

Status

Modified

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