CVE-2020-15824

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-08-08 · updated 2026-06-17
Weakness: CWE-269

Description

In 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 escalation vulnerability due to kotlin-main-kts cached scripts in the system temp directory, which is shared by all users by default.

Affected products

JetBrains Kotlin: 1.4.0-milestone1, 1.4.0-milestone2, 1.4.0-milestone3, 1.4.0-rc
Oracle Banking Extensibility Workbench: 14.2, 14.3, 14.5
Oracle Communications Cloud Native Core Policy: 1.14.0

References

http://www.openwall.com/lists/oss-security/2020/12/06/1
https://blog.jetbrains.com/blog/2020/08/06/jetbrains-security-bulletin-q2-2020/
https://lists.apache.org/thread.html/ra12c3e23b021f259a201648005b9946acd7f618a6f32301c97047967%40%3Cannounce.apache.org%3E
https://lists.apache.org/thread.html/ra12c3e23b021f259a201648005b9946acd7f618a6f32301c97047967%40%3Cdev.groovy.apache.org%3E
https://lists.apache.org/thread.html/ra12c3e23b021f259a201648005b9946acd7f618a6f32301c97047967%40%3Cusers.groovy.apache.org%3E
https://lists.apache.org/thread.html/ra9dab34bf8625511f23692ad0fcee2725f782e9aad6c5cdff6cf4465%40%3Cnotifications.groovy.apache.org%3E
https://www.oracle.com/security-alerts/cpujan2022.html
https://www.oracle.com/security-alerts/cpuoct2021.html
http://www.openwall.com/lists/oss-security/2020/12/06/1
https://blog.jetbrains.com/blog/2020/08/06/jetbrains-security-bulletin-q2-2020/
https://lists.apache.org/thread.html/ra12c3e23b021f259a201648005b9946acd7f618a6f32301c97047967%40%3Cannounce.apache.org%3E
https://lists.apache.org/thread.html/ra12c3e23b021f259a201648005b9946acd7f618a6f32301c97047967%40%3Cdev.groovy.apache.org%3E

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