What’s Vulnerable › Vulnerabilities

CVE-2019-10101

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-07-03 · updated 2026-06-17
• Weakness: CWE-319

Description

JetBrains Kotlin versions before 1.3.30 were resolving artifacts using an http connection during the build process, potentially allowing an MITM attack.

Affected products

• JetBrains Kotlin: before 1.3.30 — fixed in 1.3.30

How to fix

Upgrade to a fixed version: JetBrains Kotlin 1.3.30. Check the vendor advisory for mitigations.

References

• https://blog.jetbrains.com/blog/2019/06/19/jetbrains-security-bulletin-q1-2019/
• https://medium.com/bugbountywriteup/want-to-take-over-the-java-ecosystem-all-you-need-is-a-mitm-1fc329d898fb
• https://security.netapp.com/advisory/ntap-20230818-0012/
• https://blog.jetbrains.com/blog/2019/06/19/jetbrains-security-bulletin-q1-2019/
• https://medium.com/bugbountywriteup/want-to-take-over-the-java-ecosystem-all-you-need-is-a-mitm-1fc329d898fb
• https://security.netapp.com/advisory/ntap-20230818-0012/

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