XSS in Laravel Framework
CVE-2021-43808
Laravel is a web application framework. Laravel prior to versions 8.75.0, 7.30.6, and 6.20.42 contain a possible cross-site scripting (XSS) vulnerability in the Blade templating engine. A broken HTML element may be clicked and the user tak…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.004 (58.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N.
Affected products
- Laravel Framework — versions >= 8.0.0, < 8.75.0, >= 7.0.0, < 7.30.6, < 6.20.42
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/laravel/framework/security/advisories/GHSA-66hf-2p6w-jqfw (x_refsource_CONFIRM)
- github.com/laravel/framework/pull/39906 (x_refsource_MISC)
- github.com/laravel/framework/pull/39908 (x_refsource_MISC)
- github.com/laravel/framework/pull/39909 (x_refsource_MISC)
- github.com/laravel/framework/commit/b8174169b1807f36de1837751599e2828ceddb9b (x_refsource_MISC)
- github.com/laravel/framework/releases/tag/v6.20.42 (x_refsource_MISC)
- github.com/laravel/framework/releases/tag/v7.30.6 (x_refsource_MISC)
- github.com/laravel/framework/releases/tag/v8.75.0 (x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-43808?
- CVE-2021-43808 is a medium-severity vulnerability in Laravel Framework, classified under Cross-site Scripting. CVSS score: 5.3/10. Published 2021-12-07.
- How severe is CVE-2021-43808?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2021-43808 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.