CVE-2019-12736

Name: CVE-2019-12736
Creator: NVD / NIST
Published: 2019-10-02T19:15:14.64+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.22%

Last modified Jun 17, 2026

CVE-2019-12736 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. JetBrains 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 estimates a 2.22% chance of exploitation in the next 30 days.

Description

JetBrains Ktor framework before 1.2.0-rc does not sanitize the username provided by the user for the LDAP protocol, leading to command injection.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.22%

80.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-77

Affected Software

Vendor	Product	Versions
Jetbrains	Ktor	<= 1.1.5

References

https://blog.jetbrains.com/blog/2019/09/26/jetbrains-security-bulletin-q2-2019/Vendor Advisory
https://blog.jetbrains.com/blog/2019/09/26/jetbrains-security-bulletin-q2-2019/Vendor Advisory

Timeline

Published: Oct 2, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-12736?

JetBrains Ktor framework before 1.2.0-rc does not sanitize the username provided by the user for the LDAP protocol, leading to command injection.

How severe is CVE-2019-12736?

CVE-2019-12736 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.22% probability of exploitation in the next 30 days.

How do I fix CVE-2019-12736?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-12736?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST