CVE-2020-4052

Stored XSS through template injection in Wiki.js

Description

In Wiki.js before 2.4.107, there is a stored cross-site scripting through template injection. This vulnerability exists due to an insecure validation mechanism intended to insert v-pre tags into rendered HTML elements which contain curly-braces. By creating a crafted wiki page, a malicious Wiki.js user may stage a stored cross-site scripting attack. This allows the attacker to execute malicious JavaScript when the page is viewed by other users. This has been patched in 2.4.107.

Category

6.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.33%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: Requarks.io Wiki.js
Published at:
Updated at:

References

Link Tags
https://github.com/Requarks/wiki/security/advisories/GHSA-9jgg-4xj2-vjjj third party advisory
https://github.com/Requarks/wiki/commit/9e08718ee904046f8b2294ef6ac79e8a75a451e3 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2020-4052?
CVE-2020-4052 has been scored as a medium severity vulnerability.
How to fix CVE-2020-4052?
To fix CVE-2020-4052, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-4052 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-4052 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-4052?
CVE-2020-4052 affects Requarks.io Wiki.js.
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