CVE-2020-15138
7.1 · HIGHOverview
CVE-2020-15138 is a high-severity vulnerability affecting prismjs previewers. It was published on August 7, 2020 and has a CVSS 3.1 base score of 7.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Prism is vulnerable to Cross-Site Scripting. The easing preview of the Previewers plugin has an XSS vulnerability that allows attackers to execute arbitrary code in Safari and Internet Explorer. This impacts all Safari and Internet Explorer users of Prism >=v1.1.0 that use the _Previewers_ plugin (>=v1.10.0) or the _Previewer: Easing_ plugin (v1.1.0 to v1.9.0). This problem is fixed in version 1.21.0. To workaround the issue without upgrading, disable the easing preview on all impacted code blocks. You need Prism v1.10.0 or newer to apply this workaround.
Remediation
Check the references section for vendor advisories and patches from prismjs. Update previewers 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 |
|---|---|---|---|
| prismjs | previewers | >= 1.1.0, < 1.21.0 | Affected |
References
Frequently Asked Questions
What is CVE-2020-15138?
CVE-2020-15138 is a high-severity vulnerability affecting prismjs previewers. It was published on August 7, 2020 and has a CVSS 3.1 base score of 7.1 (HIGH).
How severe is CVE-2020-15138?
This vulnerability has a CVSS 3.1 base score of 7.1, 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-2020-15138?
Check the references section for vendor advisories and patches from prismjs. Update previewers 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-2020-15138?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-15138 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.
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