CVE-2021-43842 is a stored cross-site scripting (XSS) vulnerability affecting Wiki.js versions 2.5.257 and earlier. A malicious authenticated user can upload a specially crafted SVG file, allowing them to execute arbitrary JavaScript in the browser of other users who directly view the SVG. This vulnerability has a CVSS score of 5.4 (Medium), indicating a network attack vector with low attack complexity, requiring user interaction, and resulting in low impact to confidentiality and integrity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE. The issue is resolved in Wiki.js version 2.5.260 by implementing SVG sanitization during file uploads.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 2.5.257CPE matchmatch criteria | cpe:2.3:a:requarks:wiki.js:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
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No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.