CVE-2021-43808: Laravel Framework XSS in Blade templating engine

CVE-2021-43808 · Severity: low · CVSS 3.1 · Published 2021-12-08

Laravel Framework XSS in Blade templating engine

Technologies: laravel/framework (Packagist). Vendors: Packagist.

Quick answers

Is CVE-2021-43808 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2021-43808 being exploited in the wild.
How severe is CVE-2021-43808?
Low severity, with a CVSS score of 3.1, published 8 December 2021.
Which products and versions are affected?
illuminate/view (Packagist) ECOSYSTEM:introduced=0,fixed=6.20.42; laravel/framework (Packagist) ECOSYSTEM:introduced=0,fixed=6.20.42.
Is there a fix for CVE-2021-43808?
Yes. illuminate/view (Packagist): upgrade to 6.20.42 or later; laravel/framework (Packagist): upgrade to 6.20.42 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2021-43808?
Check whether you run illuminate/view (Packagist) or laravel/framework (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

  • illuminate/view (Packagist): upgrade to 6.20.42 or later
    composer require illuminate/view:^6.20.42
  • laravel/framework (Packagist): upgrade to 6.20.42 or later
    composer require laravel/framework:^6.20.42

Affected products

  • illuminate/view (Packagist) ECOSYSTEM:introduced=0,fixed=6.20.42
  • laravel/framework (Packagist) ECOSYSTEM:introduced=0,fixed=6.20.42

Identifiers

  • CVE-2021-43808
  • GHSA-66hf-2p6w-jqfw

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