Cross-site scripting in Requarks.io Wiki.js

1) Cross-site scripting

EUVDB-ID: #VU30253

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-4052

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. The vulnerability allows the attacker to execute malicious JavaScript when the page is viewed by other users.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Update to version 2.4.107.

Vulnerable software versions

Wiki.js: 2.4.75 - 2.4.105

External links

http://github.com/Requarks/wiki/commit/9e08718ee904046f8b2294ef6ac79e8a75a451e3
http://github.com/Requarks/wiki/security/advisories/GHSA-9jgg-4xj2-vjjj

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.