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CVE-2020-26237

Status Candidate

Overview

Highlight.js is a syntax highlighter written in JavaScript. Highlight.js versions before 9.18.2 and 10.1.2 are vulnerable to Prototype Pollution. A malicious HTML code block can be crafted that will result in prototype pollution of the base object's prototype during highlighting. If you allow users to insert custom HTML code blocks into your page/app via parsing Markdown code blocks (or similar) and do not filter the language names the user can provide you may be vulnerable. The pollution should just be harmless data but this can cause problems for applications not expecting these properties to exist and can result in strange behavior or application crashes, i.e. a potential DOS vector. If your website or application does not render user provided data it should be unaffected. Versions 9.18.2 and 10.1.2 and newer include fixes for this vulnerability. If you are using version 7 or 8 you are encouraged to upgrade to a newer release.

Related Files

Red Hat Security Advisory 2021-3917-01
Posted Oct 19, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3917-01 - Quay 3.6.0 release. Issues addressed include buffer over-read, buffer overflow, denial of service, out of bounds read, and spoofing vulnerabilities.

tags | advisory, denial of service, overflow, spoof, vulnerability
systems | linux, redhat
advisories | CVE-2017-16137, CVE-2017-16138, CVE-2018-1107, CVE-2018-1109, CVE-2018-16492, CVE-2018-21270, CVE-2018-3721, CVE-2018-3728, CVE-2018-3774, CVE-2019-1010266, CVE-2019-20920, CVE-2019-20922, CVE-2020-15366, CVE-2020-25648, CVE-2020-26237, CVE-2020-26291, CVE-2020-35653, CVE-2020-35654, CVE-2020-7608, CVE-2020-8203, CVE-2021-22922, CVE-2021-22923, CVE-2021-22924, CVE-2021-23364, CVE-2021-23368, CVE-2021-23382, CVE-2021-25289
SHA-256 | cd92891e50d6ccba7c7561d838bb19ca1093549c2001d772fd5a4bb9e4fc7fa0
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