CVE-2020-15138

Cross-Site Scripting in Prism

CVSS 7.1 HIGHEPSS 2.0%CWE-79

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.1EPSS 2.0%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

07 Aug 2020Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L

Affected products

PrismJS · prism

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References

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