SB2020042001 - Cross-site scripting in wagtail CMS for Django

Description

This security bulletin contains information about 1 security vulnerability.

1) Cross-site scripting (CVE-ID: CVE-2020-11001)

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data on the page revision comparison view within the Wagtail admin interface. A remote authenticated attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Remediation

Install update from vendor's website.

References

• https://github.com/wagtail/wagtail/commit/61045ceefea114c40ac4b680af58990dbe732389
• https://github.com/wagtail/wagtail/releases/tag/v2.8.1
• https://github.com/wagtail/wagtail/security/advisories/GHSA-v2wc-pfq2-5cm6