CVE-2021-21408: Access to restricted PHP code by dynamic static class access in smarty

CVE-2021-21408 · Severity: low · CVSS 3.1 · Published 2022-01-12

Access to restricted PHP code by dynamic static class access in smarty

Technologies: smarty/smarty (Packagist). Vendors: Packagist.

Quick answers

Is CVE-2021-21408 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2021-21408 being exploited in the wild.
How severe is CVE-2021-21408?
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=3.1.43.
Is there a fix for CVE-2021-21408?
Yes. smarty/smarty (Packagist): upgrade to 3.1.43 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2021-21408?
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 3.1.43 or later
    composer require smarty/smarty:^3.1.43

Affected products

  • smarty/smarty (Packagist) ECOSYSTEM:introduced=0,fixed=3.1.43

Identifiers

  • CVE-2021-21408
  • GHSA-4h9c-v5vg-5m6m

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