What is CVE-2020-4052?

CVE-2020-4052 is a medium-severity vulnerability in Requarks Wiki.js, classified under Cross-site Scripting. CVSS score: 6.3/10. Published 2020-06-16.

How severe is CVE-2020-4052?

Medium severity. CVSS v3 base score is 6.3 out of 10.

XSS in Requarks Wiki.js

CVE-2020-4052

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.008 (54.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L.

Affected products

Requarks Wiki.js
Requarks.io Wiki.js — versions < 2.4.107

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-4052?: CVE-2020-4052 is a medium-severity vulnerability in Requarks Wiki.js, classified under Cross-site Scripting. CVSS score: 6.3/10. Published 2020-06-16.
How severe is CVE-2020-4052?: Medium severity. CVSS v3 base score is 6.3 out of 10.