Published: 07/08/2020 Updated: 28/08/2020

CVSS v2 Base Score: 2.6 | Impact Score: 2.9 | Exploitability Score: 4.9

CVSS v3 Base Score: 7.5 | Impact Score: 5.3 | Exploitability Score: 1.6

VMScore: 231

Vector: AV:N/AC:H/Au:N/C:N/I:P/A:N

Prism is vulnerable to Cross-Site Scripting. The easing preview of the Previewers plugin has an XSS vulnerability that allows malicious users 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.

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prismjs previewers

Debian Bug report logs - #968094 node-prismjs: CVE-2020-15138 Package: src:node-prismjs; Maintainer for src:node-prismjs is Debian Javascript Maintainers <pkg-javascript-devel@listsaliothdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Sat, 8 Aug 2020 12:27:04 UTC Severity: important Tags: ...

CWE-79 https://prismjs.com/plugins/previewers/#disabling-a-previewer https://github.com/PrismJS/prism/pull/2506/commits/7bd7de05edf71112a3a77f87901a2409c9c5c20c https://github.com/PrismJS/prism/security/advisories/GHSA-wvhm-4hhf-97x9 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=968094 https://nvd.nist.gov

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CVE-2020-15138

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