CVE-2022-29221

Name: CVE-2022-29221
Creator: NVD / NIST
Published: 2022-05-24T15:15:07.917+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 4.54%

Last modified Jun 17, 2026

CVE-2022-29221 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Smarty is a template engine for PHP, facilitating the separation of presentation (HTML/CSS) from application logic. Prior to versions 3.1.45 and 4.1.1, template authors could inject php code by choosing a malicious {block} name or {include} file name. EPSS estimates a 4.54% chance of exploitation in the next 30 days.

Description

Smarty is a template engine for PHP, facilitating the separation of presentation (HTML/CSS) from application logic. Prior to versions 3.1.45 and 4.1.1, template authors could inject php code by choosing a malicious {block} name or {include} file name. Sites that cannot fully trust template authors should upgrade to versions 3.1.45 or 4.1.1 to receive a patch for this issue. There are currently no known workarounds.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

4.54%

90.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Smarty	Smarty	< 3.1.45
Smarty	Smarty	>= 4.0.0, < 4.1.1
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Debian	Debian Linux	11.0
Fedoraproject	Fedora	36
Fedoraproject	Fedora	37

References

https://github.com/smarty-php/smarty/commit/64ad6442ca1da31cefdab5c9874262b702cccdddPatch, Third Party Advisory
https://github.com/smarty-php/smarty/releases/tag/v3.1.45Release Notes, Third Party Advisory
https://github.com/smarty-php/smarty/releases/tag/v4.1.1Release Notes, Third Party Advisory
https://github.com/smarty-php/smarty/security/advisories/GHSA-634x-pc3q-cf4cThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00044.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://security.gentoo.org/glsa/202209-09Third Party Advisory
https://www.debian.org/security/2022/dsa-5151Third Party Advisory
https://github.com/smarty-php/smarty/commit/64ad6442ca1da31cefdab5c9874262b702cccdddPatch, Third Party Advisory
https://github.com/smarty-php/smarty/releases/tag/v3.1.45Release Notes, Third Party Advisory
https://github.com/smarty-php/smarty/releases/tag/v4.1.1Release Notes, Third Party Advisory
https://github.com/smarty-php/smarty/security/advisories/GHSA-634x-pc3q-cf4cThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00044.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://security.gentoo.org/glsa/202209-09Third Party Advisory
https://www.debian.org/security/2022/dsa-5151Third Party Advisory

Timeline

Published: May 24, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-29221?

How severe is CVE-2022-29221?

CVE-2022-29221 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 4.54% probability of exploitation in the next 30 days.

How do I fix CVE-2022-29221?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-29221?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST