CVE-2020-15138

Cross-Site Scripting in Prism

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.

Category

7.1
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.86% Top 30%
Vendor Advisory prismjs.com
Affected: PrismJS prism
Published at:
Updated at:

References

Link Tags
https://github.com/PrismJS/prism/security/advisories/GHSA-wvhm-4hhf-97x9 third party advisory
https://prismjs.com/plugins/previewers/#disabling-a-previewer vendor advisory
https://github.com/PrismJS/prism/pull/2506/commits/7bd7de05edf71112a3a77f87901a2409c9c5c20c third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2020-15138?
CVE-2020-15138 has been scored as a high severity vulnerability.
How to fix CVE-2020-15138?
To fix CVE-2020-15138, 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-2020-15138 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-15138 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-15138?
CVE-2020-15138 affects PrismJS prism.
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