CVE-2019-10062

Public Exploit

Description

The HTMLSanitizer class in html-sanitizer.ts in all released versions of the Aurelia framework 1.x repository is vulnerable to XSS. The sanitizer only attempts to filter SCRIPT elements, which makes it feasible for remote attackers to conduct XSS attacks via (for example) JavaScript code in an attribute of various other elements. An attacker might also exploit a bug in how the SCRIPT string is processed by splitting and nesting them for example.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.55%
Vendor Advisory aurelia.io
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://aurelia.io vendor advisory
https://github.com/aurelia/templating-resources/blob/0cef07a8cac8e99146d8e1c4b734491bb3dc4724/src/html-sanitizer.js third party advisory
https://www.gosecure.net/blog/2021/05/12/aurelia-framework-insecure-default-allows-xss/ exploit third party advisory mitigation

Frequently Asked Questions

What is the severity of CVE-2019-10062?
CVE-2019-10062 has been scored as a medium severity vulnerability.
How to fix CVE-2019-10062?
To fix CVE-2019-10062, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-10062 being actively exploited in the wild?
It is possible that CVE-2019-10062 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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