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Vulnerability record · CVE-2019-10102 · published 3 July 2019

CVE-2019-10102: Jetbrains kotlin cleartext transmission vulnerability

Jetbrains · Kotlin

JetBrains Ktor framework (created using the Kotlin IDE template) versions before 1.1.0 were resolving artifacts using an http connection during the build process, potentially allowing an MITM attack. This issue was fixed in Kotlin plugin version 1.3.30.

8.1 CVSS 3.0 High EPSS 0.82% · top 44.5% CWE-319 · Cleartext transmission
8.1CVSS 3.0 base score, v2 6.8
0.82%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

JetBrains Ktor framework (created using the Kotlin IDE template) versions before 1.1.0 were resolving artifacts using an http connection during the build process, potentially allowing an MITM attack. This issue was fixed in Kotlin plugin version 1.3.30.

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://blog.jetbrains.com/blog/2019/06/19/jetbrains-security-bulletin-q1-2019/ Vendor Advisory
https://security.netapp.com/advisory/ntap-20230818-0012/
https://blog.jetbrains.com/blog/2019/06/19/jetbrains-security-bulletin-q1-2019/ Vendor Advisory
https://security.netapp.com/advisory/ntap-20230818-0012/

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-53914Jetbrains kotlin deserialization of untrusted data vulnerabilityIn JetBrains Kotlin before 2.4.20 code execution was possible via unsafe deserialization in the build cache metadataEPSS 0.33%9.8CVE-2023-45612Jetbrains ktor xml external entity (xxe) vulnerabilityIn JetBrains Ktor before 2.3.5 default configuration of ContentNegotiation with XML format was vulnerable to XXEEPSS 0.60%9.8CVE-2019-12736Jetbrains ktor command injection vulnerabilityJetBrains Ktor framework before 1.2.0-rc does not sanitize the username provided by the user for the LDAP protocol, leading to command injection.EPSS 2.2%9.1CVE-2023-45613Jetbrains ktor improper certificate validation vulnerabilityIn JetBrains Ktor before 2.3.5 server certificates were not verifiedEPSS 0.30%8.8CVE-2020-15824Jetbrains kotlin improper privilege management vulnerabilityIn JetBrains Kotlin from 1.4-M1 to 1.4-RC (as Kotlin 1.3.7x is not affected by the issue. Fixed version is 1.4.0) there is a script-cache privilege e…EPSS 1.8%8.1CVE-2019-10101Jetbrains kotlin cleartext transmission vulnerabilityJetBrains Kotlin versions before 1.3.30 were resolving artifacts using an http connection during the build process, potentially allowing an MITM atta…EPSS 1.4%8.1CVE-2019-10103Jetbrains kotlin missing encryption vulnerabilityJetBrains IntelliJ IDEA projects created using the Kotlin (JS Client/JVM Server) IDE Template were resolving Gradle artifacts using an http connectio…EPSS 0.81%7.5CVE-2022-48476Jetbrains ktor path traversal vulnerabilityIn JetBrains Ktor before 2.3.0 path traversal in the `resolveResource` method was possibleEPSS 0.75%

Source: NIST National Vulnerability Database (record CVE-2019-10102), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.