PT-2021-23972 · Wiki.Js · Wiki.Js

Published 2021-12-20 · Updated 2022-01-03 · CVE-2021-43842

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions: Wiki.js versions 2.5.257 and earlier

Description: The issue allows a malicious user to stage a stored cross-site scripting attack by uploading a crafted SVG file. This enables the attacker to execute malicious JavaScript when the SVG is viewed directly by other users. However, scripts do not execute when loaded inside a page via normal <img> tags.

Recommendations: For Wiki.js versions 2.5.257 and earlier, update to version 2.5.260 or later to resolve the issue. As a temporary workaround, consider disabling file upload for all non-trusted users until a patch is applied.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-43842

GHSA-3QV4-GP35-RGH7

Affected Products

Wiki.Js

References · 5

• https://github.com/Requarks/wiki/commit/5d3e81496fba1f0fbd64eeb855f30f69a9040718 · Patch
• https://github.com/Requarks/wiki/security/advisories/GHSA-3qv4-gp35-rgh7 · Patch
• https://osv.dev/vulnerability/CVE-2021-43842 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-43842 · Security Note
• https://github.com/Requarks/wiki/releases/tag/2.5.260 · Note