CVE-2021-43808

MEDIUM

Blade `@parent` Exploitation Leading To Possible XSS in Laravel

Title source: CVE List
STIX 2.1 vulnerability

Record summary

CVE-2021-43808 has a selected CVSS score of 5.3 (medium).

Description

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 taken to another location in their browser due to XSS. This is due to the user being able to guess the parent placeholder SHA-1 hash by trying common names of sections. If the parent template contains an exploitable HTML structure an XSS vulnerability can be exposed. This vulnerability has been patched in versions 8.75.0, 7.30.6, and 6.20.42 by determining the parent placeholder at runtime and using a random hash that is unique to each request.

Description source: CVE List

Affected products and versions

3
ProductSourceVersion range

framework

Browse laravel / framework
CVE List>= 8.0.0, < 8.75.0affected
>= 7.0.0, < 7.30.6affected
< 6.20.42affected

illuminate/view

Browse Packagist / illuminate/view
GitHub AdvisoryBefore 6.20.42 · Fixed in 6.20.42affected
7.0.0 to < 7.30.6 · Fixed in 7.30.6affected
8.0.0 to < 8.75.0 · Fixed in 8.75.0affected

laravel/framework

Browse Packagist / laravel/framework
GitHub AdvisoryBefore 6.20.42 · Fixed in 6.20.42affected
7.0.0 to < 7.30.6 · Fixed in 7.30.6affected
8.0.0 to < 8.75.0 · Fixed in 8.75.0affected

References

12