# CVE-2021-29454: Sandbox Escape by math function in smarty

Source: https://junglewise.ai/threats/cve-2021-29454-sandbox-escape-by-math-function-in-smarty  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-01-12  
License: CC BY 4.0 with a link back

CVE-2021-29454 · Severity: low · CVSS 3.1 · Published 2022-01-12

Sandbox Escape by math function in smarty

Technologies: [smarty/smarty (Packagist)](https://junglewise.ai/threats/technologies/smarty-smarty). Vendors: [Packagist](https://junglewise.ai/threats/vendors/packagist).

## Quick answers

**Is CVE-2021-29454 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2021-29454 being exploited in the wild.

**How severe is CVE-2021-29454?** Low severity, with a CVSS score of 3.1, published 12 January 2022.

**Which products and versions are affected?** smarty/smarty (Packagist) ECOSYSTEM:introduced=0,fixed=3.1.42.

**Is there a fix for CVE-2021-29454?** Yes. smarty/smarty (Packagist): upgrade to 3.1.42 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2021-29454?** Check whether you run smarty/smarty (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- smarty/smarty (Packagist): upgrade to 3.1.42 or later

  ```sh
  composer require smarty/smarty:^3.1.42
  ```


## Affected products

- smarty/smarty (Packagist) ECOSYSTEM:introduced=0,fixed=3.1.42

## Identifiers

- CVE-2021-29454
- GHSA-29gp-2c3m-3j6m

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