CVE-2020-4054
7.3 · HIGHOverview
CVE-2020-4054 is a high-severity vulnerability affecting sanitize_project sanitize. It was published on June 16, 2020 and has a CVSS 3.1 base score of 7.3 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
In Sanitize (RubyGem sanitize) greater than or equal to 3.0.0 and less than 5.2.1, there is a cross-site scripting vulnerability. When HTML is sanitized using Sanitize's "relaxed" config, or a custom config that allows certain elements, some content in a math or svg element may not be sanitized correctly even if math and svg are not in the allowlist. You are likely to be vulnerable to this issue if you use Sanitize's relaxed config or a custom config that allows one or more of the following HTML elements: iframe, math, noembed, noframes, noscript, plaintext, script, style, svg, xmp. Using carefully crafted input, an attacker may be able to sneak arbitrary HTML through Sanitize, potentially resulting in XSS (cross-site scripting) or other undesired behavior when that HTML is rendered in a browser. This has been fixed in 5.2.1.
Remediation
Check the references section for vendor advisories and patches from sanitize_project. Update sanitize to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| sanitize_project | sanitize | >= 3.0.0, < 5.2.1 | Affected |
References
Frequently Asked Questions
What is CVE-2020-4054?
CVE-2020-4054 is a high-severity vulnerability affecting sanitize_project sanitize. It was published on June 16, 2020 and has a CVSS 3.1 base score of 7.3 (HIGH).
How severe is CVE-2020-4054?
This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2020-4054?
Check the references section for vendor advisories and patches from sanitize_project. Update sanitize to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2020-4054?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-4054 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
Related HIGH CVEs from 2020
View all →The Richtext Editor in Pega Platform before 8.2.6 is affected by a Stored Cross-Site Scripting (XSS)
Pega Platform before version 8.2.6 is affected by a Stored Cross-Site Scripting (XSS) vulnerability
In PrestaShop from version 1.5.0.0 and before version 1.7.6.6, the authentication system is malforme
The Table Filter and Charts for Confluence Server app before 5.3.25 (for Atlassian Confluence) allow
<p>A tampering vulnerability exists when Microsoft SharePoint Server fails to properly handle profil
Yii 2 (yiisoft/yii2) before version 2.0.38 is vulnerable to remote code execution if the application
OpenSlides is a free, Web-based presentation and assembly system for managing and projecting agenda,
libsixel 1.8.4 has an integer overflow in sixel_frame_resize in frame.c.
Cross-site request forgery (CSRF) vulnerability in Opsview before 4.4.1 and Opsview Core before 2013
ngiflib 0.4 has a heap-based buffer over-read in GifIndexToTrueColor in ngiflib.c.
obs-server before 1.7.7 allows logins by 'unconfirmed' accounts due to a bug in the REST api impleme
SQL injection vulnerability in the Jomres (com_jomres) component before 7.3.1 for Joomla! allows rem