Spoofing attack in JetBrains IntelliJ IDEA

Published: 2020-05-07
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-11690
Exploitation vector Network
Public exploit N/A
Vulnerable software
IntelliJ IDEA
Web applications / Modules and components for CMS

Vendor JetBrains s.r.o.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Authentication Bypass by Spoofing

EUVDB-ID: #VU27578

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-11690

CWE-ID: CWE-290 - Authentication Bypass by Spoofing

Exploit availability: No


The vulnerability allows a remote attacker to perform a spoofing attack.

The vulnerability exists due to the license server could be resolved to an untrusted host in some cases. A remote attacker can spoof origin of the license server and execute arbitrary code on the host connected to a malicious instance.


Install updates from vendor's website.

Vulnerable software versions

IntelliJ IDEA: 11.0 - 2019.3.4

CPE2.3 External links


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.