Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2021-20727
CVE-2021-20727:
NixOS vulnerability analysis and mitigation
Overview
Cross-site scripting vulnerability was discovered in Zettlr versions from 0.20.0 to 1.8.8. The vulnerability was identified and disclosed on May 26, 2021. Zettlr is a Markdown editor application provided by Hendrik Erz that allows users to create and edit markdown documents (JVN Advisory).
Technical details
The vulnerability is classified as a cross-site scripting (CWE-79) issue. It received a CVSS v3.1 base score of 6.1 MEDIUM (Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N) and CVSS v2.0 base score of 4.3 MEDIUM (Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N) (NVD).
Impact
The vulnerability allows an attacker to execute arbitrary scripts on the system where Zettlr runs if a file or code snippet containing an invalid iframe is loaded into the application (JVN Advisory).
Mitigation and workarounds
Users are advised to update the software to the latest version according to the information provided by the developer to mitigate this vulnerability (JVN Advisory).
Additional resources
Source: This report was generated using AI
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