← Vulnerability feed

Vulnerability record · CVE-2019-12399 · published 14 January 2020

CVE-2019-12399: Apache kafka cleartext transmission vulnerability

Apache · Kafka

When Connect workers in Apache Kafka 2.0.0, 2.0.1, 2.1.0, 2.1.1, 2.2.0, 2.2.1, or 2.3.0 are configured with one or more config providers, and a connector is created/updated on that Connect cluster to use an externalized secret variable in a substring of a connector configuration property value, then any client can issue a request to the same Connect cluster to obtain the connector's task configuration and the response will contain the plaintext secret rather than the externalized secrets variables.

7.5 CVSS 3.1 High EPSS 3.9% · top 10.1% CWE-319 · Cleartext transmission
7.5CVSS 3.1 base score, v2 5.0
3.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
13Affected product versions listed by NVD
48References
17 Jun 2026Last modified by NVD

Description

When Connect workers in Apache Kafka 2.0.0, 2.0.1, 2.1.0, 2.1.1, 2.2.0, 2.2.1, or 2.3.0 are configured with one or more config providers, and a connector is created/updated on that Connect cluster to use an externalized secret variable in a substring of a connector configuration property value, then any client can issue a request to the same Connect cluster to obtain the connector's task configuration and the response will contain the plaintext secret rather than the externalized secrets variables.

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

Affected products

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

References

LinkTags
http://www.openwall.com/lists/oss-security/2020/01/14/1 Mailing ListThird Party Advisory
https://lists.apache.org/thread.html/r0e3a613705d70950aca2bfe9a6265c87503921852d9a3dbce512ca9f%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r2d390dec5f360ec8aa294bef18e1a4385e2a3698d747209216f5a48b%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r3154f5adbc905f1f9012a92240c8e00a96628470cc819453b9606d0e%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r3203d7f25a6ca56ff3e48c43a6aa7cb60b8e5d57d0eed9f76dc2b7a8%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r47c225db363d1ee2c18c4b3b2f51b63a9789f78c7fa602e5976ecd05%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r4b20b40c40d4a4c641e2ef4228098a57935e5782bfdfdf3650e48265%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r4d9e87cdae99e98d7b244cfa53d9d2532d368d3a187fbc87c493dcbe%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r56eb055b544931451283fee51f7e1f5b8ebd3085fed7d77aaba504c9%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r6af5ed95726874e9add022955be83c192428c248d1c9a1914aff89d9%40%3Cannounce.apache.org%
https://lists.apache.org/thread.html/r6af5ed95726874e9add022955be83c192428c248d1c9a1914aff89d9%40%3Cdev.kafka.apache.org Mailing ListVendor Advisory
https://lists.apache.org/thread.html/r6af5ed95726874e9add022955be83c192428c248d1c9a1914aff89d9%40%3Cusers.kafka.apache.o
https://lists.apache.org/thread.html/r6fa1cff4786dcef2ddd1d717836ef123c878e8321c24855bad24ae0f%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r801c68bf987931f35d2e24ecc99f3aa2850fdd8f5ef15fe6c60fecf3%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r8890b8f18f1de821595792b58b968a89692a255bc20d86d395270740%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r9871a4215b621c1d09deee5eba97f0f44fde01b4363deb1bed0dd160%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/rc27d424d0bdeaf31081c3e246db3c66e882243ae3f342dfa845e0261%40%3Ccommits.kafka.apache
https://lists.apache.org/thread.html/rda253155601968331b5cf0da4f273813bbd91843c2568a8495d1c662%40%3Ccommits.kafka.apache
https://lists.apache.org/thread.html/rde947ee866de6687bc51cdc8dfa6d7e6b3ad4ce8c708c344f773e6dc%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/rfe90ca0463c199b99c2921410639aed53a172ea8b733eab0dc776262%40%3Ccommits.druid.apache
https://www.oracle.com//security-alerts/cpujul2021.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujan2021.html PatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2020/01/14/1 Mailing ListThird Party Advisory
https://lists.apache.org/thread.html/r0e3a613705d70950aca2bfe9a6265c87503921852d9a3dbce512ca9f%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r2d390dec5f360ec8aa294bef18e1a4385e2a3698d747209216f5a48b%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r3154f5adbc905f1f9012a92240c8e00a96628470cc819453b9606d0e%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r3203d7f25a6ca56ff3e48c43a6aa7cb60b8e5d57d0eed9f76dc2b7a8%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r47c225db363d1ee2c18c4b3b2f51b63a9789f78c7fa602e5976ecd05%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r4b20b40c40d4a4c641e2ef4228098a57935e5782bfdfdf3650e48265%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r4d9e87cdae99e98d7b244cfa53d9d2532d368d3a187fbc87c493dcbe%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r56eb055b544931451283fee51f7e1f5b8ebd3085fed7d77aaba504c9%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r6af5ed95726874e9add022955be83c192428c248d1c9a1914aff89d9%40%3Cannounce.apache.org%
https://lists.apache.org/thread.html/r6af5ed95726874e9add022955be83c192428c248d1c9a1914aff89d9%40%3Cdev.kafka.apache.org Mailing ListVendor Advisory
https://lists.apache.org/thread.html/r6af5ed95726874e9add022955be83c192428c248d1c9a1914aff89d9%40%3Cusers.kafka.apache.o
https://lists.apache.org/thread.html/r6fa1cff4786dcef2ddd1d717836ef123c878e8321c24855bad24ae0f%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r801c68bf987931f35d2e24ecc99f3aa2850fdd8f5ef15fe6c60fecf3%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r8890b8f18f1de821595792b58b968a89692a255bc20d86d395270740%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/r9871a4215b621c1d09deee5eba97f0f44fde01b4363deb1bed0dd160%40%3Ccommits.druid.apache

Track CVE-2019-12399 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

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

9.8CVE-2022-22963Spring Cloud Function routing expression SpEL injection RCESpring Cloud Function versions 3.1.6, 3.2.2 and older unsupported versions allow a user to supply a crafted SpEL expression as a routing-expression w…KEVEPSS 100%analysed9.8CVE-2020-5413Vmware spring integration deserialization of untrusted data vulnerabilitySpring Integration framework provides Kryo Codec implementations as an alternative for Java (de)serialization. When Kryo is configured with default o…EPSS 4.4%9.8CVE-2019-13990Softwareag quartz xml external entity (xxe) vulnerabilityinitDocumentParser in xml/XMLSchedulingDataProcessor.java in Terracotta Quartz Scheduler through 2.3.0 allows XXE attacks via a job description.EPSS 16%9.8CVE-2019-0228Apache pdfbox xml external entity (xxe) vulnerabilityApache PDFBox 2.0.14 does not properly initialize the XML parser, which allows context-dependent attackers to conduct XML External Entity (XXE) attac…EPSS 9.5%9.1CVE-2026-33557Apache kafka vulnerabilityA possible security vulnerability has been identified in Apache Kafka. By default, the broker property `sasl.oauthbearer.jwt.validator.class` is set …EPSS 0.93%8.8CVE-2025-27818Apache kafka deserialization of untrusted data vulnerabilityA possible security vulnerability has been identified in Apache Kafka. This requires access to a alterConfig to the cluster resource, or Kafka Connec…EPSS 1.0%8.8CVE-2021-29505XStream XML deserialization allows remote command executionXStream versions prior to 1.4.17 deserialize untrusted XML input without adequate type restrictions, allowing an attacker with sufficient rights to e…EPSS 77%analysed8.8CVE-2020-26217XStream blocklist bypass allows remote code executionXStream before 1.4.14 can be tricked into deserializing attacker-controlled input that leads to OS command execution. Only deployments relying on XSt…EPSS 85%analysed

Source: NIST National Vulnerability Database (record CVE-2019-12399), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.