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  <title>CVE Daily – Apache ZooKeeper (High+Critical)</title>
  <link>https://cvedaily.com/pages/tags/zookeeper.html</link>
  <atom:link href="https://cvedaily.com/feed-tags/zookeeper-severe.xml" rel="self" type="application/rss+xml"/>
  <description>CVE Daily – Apache ZooKeeper (High+Critical)</description>
  <language>en</language>
  <lastBuildDate>Wed, 03 Jun 2026 21:26:53 +0000</lastBuildDate>
  <item>
    <title>[High] CVE-2026-24308 – Improper handling of configuration values in ZKConfig in Apache ZooKeeper 3.8.5 ...</title>
    <link>https://nvd.nist.gov/vuln/detail/CVE-2026-24308</link>
    <guid isPermaLink="true">https://nvd.nist.gov/vuln/detail/CVE-2026-24308</guid>
    <pubDate>Sat, 07 Mar 2026 09:16:07 +0000</pubDate>
    <description>
<![CDATA[
  <p><strong><span class="badge risk high">High</span> CVE-2026-24308</strong></p>
  <p>Improper handling of configuration values in ZKConfig in Apache ZooKeeper 3.8.5 and 3.9.4 on all platforms allows an attacker to expose sensitive information stored in client configuration in the client's logfile. Configuration values are exposed at INFO level logging rendering potential production systems affected by the issue. Users are recommended to upgrade to version 3.8.6 or 3.9.5 which fix…</p>
  <p><strong>CVSS:</strong> 7.5 · <strong>CWE:</strong> CWE-532</p>
  <p><a href="https://nvd.nist.gov/vuln/detail/CVE-2026-24308">View on NVD</a></p>
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    </description>
  </item>
  <item>
    <title>[High] CVE-2026-24281 – Hostname verification in Apache ZooKeeper ZKTrustManager falls back to reverse D...</title>
    <link>https://nvd.nist.gov/vuln/detail/CVE-2026-24281</link>
    <guid isPermaLink="true">https://nvd.nist.gov/vuln/detail/CVE-2026-24281</guid>
    <pubDate>Sat, 07 Mar 2026 09:16:07 +0000</pubDate>
    <description>
<![CDATA[
  <p><strong><span class="badge risk high">High</span> CVE-2026-24281</strong></p>
  <p>Hostname verification in Apache ZooKeeper ZKTrustManager falls back to reverse DNS (PTR) when IP SAN validation fails, allowing attackers who control or spoof PTR records to impersonate ZooKeeper servers or clients with a valid certificate for the PTR name. It's important to note that attacker must present a certificate which is trusted by ZKTrustManager which makes the attack vector harder to ex…</p>
  <p><strong>CVSS:</strong> 7.4 · <strong>CWE:</strong> CWE-295</p>
  <p><a href="https://nvd.nist.gov/vuln/detail/CVE-2026-24281">View on NVD</a></p>
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    </description>
  </item>
  <item>
    <title>[Critical] CVE-2024-51504 – When using IPAuthenticationProvider in ZooKeeper Admin Server there is a possibi...</title>
    <link>https://nvd.nist.gov/vuln/detail/CVE-2024-51504</link>
    <guid isPermaLink="true">https://nvd.nist.gov/vuln/detail/CVE-2024-51504</guid>
    <pubDate>Thu, 07 Nov 2024 10:15:08 +0000</pubDate>
    <description>
<![CDATA[
  <p><strong><span class="badge risk critical">Critical</span> CVE-2024-51504</strong></p>
  <p>When using IPAuthenticationProvider in ZooKeeper Admin Server there is a possibility of Authentication Bypass by Spoofing -- this only impacts IP based authentication implemented in ZooKeeper Admin Server. Default configuration of client's IP address detection in IPAuthenticationProvider, which uses HTTP request headers, is weak and allows an attacker to bypass authentication via spoofing client'…</p>
  <p><strong>CVSS:</strong> 9.1 · <strong>CWE:</strong> CWE-290</p>
  <p><a href="https://nvd.nist.gov/vuln/detail/CVE-2024-51504">View on NVD</a></p>
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    </description>
  </item>
  <item>
    <title>[High] CVE-2024-39676 – Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apac...</title>
    <link>https://nvd.nist.gov/vuln/detail/CVE-2024-39676</link>
    <guid isPermaLink="true">https://nvd.nist.gov/vuln/detail/CVE-2024-39676</guid>
    <pubDate>Wed, 24 Jul 2024 08:15:02 +0000</pubDate>
    <description>
<![CDATA[
  <p><strong><span class="badge risk high">High</span> CVE-2024-39676</strong></p>
  <p>Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Pinot.  This issue affects Apache Pinot: from 0.1 before 1.0.0.  Users are recommended to upgrade to version 1.0.0 and configure RBAC, which fixes the issue.  Details:   When using a request to path “/appconfigs” to the controller, it can lead to the disclosure of sensitive information such as system information (e…</p>
  <p><strong>CVSS:</strong> 7.5 · <strong>CWE:</strong> CWE-200</p>
  <p><a href="https://nvd.nist.gov/vuln/detail/CVE-2024-39676">View on NVD</a></p>
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    </description>
  </item>
  <item>
    <title>[High] CVE-2024-27309 – While an Apache Kafka cluster is being migrated from ZooKeeper mode to KRaft mod...</title>
    <link>https://nvd.nist.gov/vuln/detail/CVE-2024-27309</link>
    <guid isPermaLink="true">https://nvd.nist.gov/vuln/detail/CVE-2024-27309</guid>
    <pubDate>Fri, 12 Apr 2024 07:15:08 +0000</pubDate>
    <description>
<![CDATA[
  <p><strong><span class="badge risk high">High</span> CVE-2024-27309</strong></p>
  <p>While an Apache Kafka cluster is being migrated from ZooKeeper mode to KRaft mode, in some cases ACLs will not be correctly enforced.  Two preconditions are needed to trigger the bug: 1. The administrator decides to remove an ACL 2. The resource associated with the removed ACL continues to have two or more other ACLs associated with it after the removal.  When those two preconditions are met, Kaf…</p>
  <p><strong>CVSS:</strong> 7.4 · <strong>CWE:</strong> CWE-863</p>
  <p><a href="https://nvd.nist.gov/vuln/detail/CVE-2024-27309">View on NVD</a></p>
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    </description>
  </item>
  <item>
    <title>[High] CVE-2023-50298 – Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apac...</title>
    <link>https://nvd.nist.gov/vuln/detail/CVE-2023-50298</link>
    <guid isPermaLink="true">https://nvd.nist.gov/vuln/detail/CVE-2023-50298</guid>
    <pubDate>Fri, 09 Feb 2024 18:15:08 +0000</pubDate>
    <description>
<![CDATA[
  <p><strong><span class="badge risk high">High</span> CVE-2023-50298</strong></p>
  <p>Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Solr.This issue affects Apache Solr: from 6.0.0 through 8.11.2, from 9.0.0 before 9.4.1.  Solr Streaming Expressions allows users to extract data from other Solr Clouds, using a "zkHost" parameter. When original SolrCloud is setup to use ZooKeeper credentials and ACLs, they will be sent to whatever "zkHost" the use…</p>
  <p><strong>CVSS:</strong> 7.5 · <strong>CWE:</strong> CWE-200</p>
  <p><a href="https://nvd.nist.gov/vuln/detail/CVE-2023-50298">View on NVD</a></p>
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    </description>
  </item>
  <item>
    <title>[Critical] CVE-2023-44981 – Authorization Bypass Through User-Controlled Key vulnerability in Apache ZooKeep...</title>
    <link>https://nvd.nist.gov/vuln/detail/CVE-2023-44981</link>
    <guid isPermaLink="true">https://nvd.nist.gov/vuln/detail/CVE-2023-44981</guid>
    <pubDate>Wed, 11 Oct 2023 12:15:11 +0000</pubDate>
    <description>
<![CDATA[
  <p><strong><span class="badge risk critical">Critical</span> CVE-2023-44981</strong></p>
  <p>Authorization Bypass Through User-Controlled Key vulnerability in Apache ZooKeeper. If SASL Quorum Peer authentication is enabled in ZooKeeper (quorum.auth.enableSasl=true), the authorization is done by verifying that the instance part in SASL authentication ID is listed in zoo.cfg server list. The instance part in SASL auth ID is optional and if it's missing, like 'eve@EXAMPLE.COM', the authoriz…</p>
  <p><strong>CVSS:</strong> 9.1 · <strong>CWE:</strong> CWE-639</p>
  <p><a href="https://nvd.nist.gov/vuln/detail/CVE-2023-44981">View on NVD</a></p>
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    </description>
  </item>
  <item>
    <title>[High] CVE-2021-25642 – ZKConfigurationStore which is optionally used by CapacityScheduler of Apache Had...</title>
    <link>https://nvd.nist.gov/vuln/detail/CVE-2021-25642</link>
    <guid isPermaLink="true">https://nvd.nist.gov/vuln/detail/CVE-2021-25642</guid>
    <pubDate>Thu, 25 Aug 2022 14:15:09 +0000</pubDate>
    <description>
<![CDATA[
  <p><strong><span class="badge risk high">High</span> CVE-2021-25642</strong></p>
  <p>ZKConfigurationStore which is optionally used by CapacityScheduler of Apache Hadoop YARN deserializes data obtained from ZooKeeper without validation. An attacker having access to ZooKeeper can run arbitrary commands as YARN user by exploiting this. Users should upgrade to Apache Hadoop 2.10.2, 3.2.4, 3.3.4 or later (containing YARN-11126) if ZKConfigurationStore is used.</p>
  <p><strong>CVSS:</strong> 8.8 · <strong>CWE:</strong> CWE-502</p>
  <p><a href="https://nvd.nist.gov/vuln/detail/CVE-2021-25642">View on NVD</a></p>
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    </description>
  </item>
  <item>
    <title>[High] CVE-2021-36162 – Apache Dubbo supports various rules to support configuration override or traffic...</title>
    <link>https://nvd.nist.gov/vuln/detail/CVE-2021-36162</link>
    <guid isPermaLink="true">https://nvd.nist.gov/vuln/detail/CVE-2021-36162</guid>
    <pubDate>Tue, 07 Sep 2021 10:15:07 +0000</pubDate>
    <description>
<![CDATA[
  <p><strong><span class="badge risk high">High</span> CVE-2021-36162</strong></p>
  <p>Apache Dubbo supports various rules to support configuration override or traffic routing (called routing in Dubbo). These rules are loaded into the configuration center (eg: Zookeeper, Nacos, ...) and retrieved by the customers when making a request in order to find the right endpoint. When parsing these YAML rules, Dubbo customers will use SnakeYAML library to load the rules which by default wil…</p>
  <p><strong>CVSS:</strong> 8.8 · <strong>CWE:</strong> N/A</p>
  <p><a href="https://nvd.nist.gov/vuln/detail/CVE-2021-36162">View on NVD</a></p>
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    </description>
  </item>
  <item>
    <title>[Critical] CVE-2019-4244 – IBM SmartCloud Analytics 1.3.1 through 1.3.5 could allow a remote attacker to ga...</title>
    <link>https://nvd.nist.gov/vuln/detail/CVE-2019-4244</link>
    <guid isPermaLink="true">https://nvd.nist.gov/vuln/detail/CVE-2019-4244</guid>
    <pubDate>Tue, 10 Dec 2019 16:15:13 +0000</pubDate>
    <description>
<![CDATA[
  <p><strong><span class="badge risk critical">Critical</span> CVE-2019-4244</strong></p>
  <p>IBM SmartCloud Analytics 1.3.1 through 1.3.5 could allow a remote attacker to gain unauthorized information and unrestricted control over Zookeeper installations due to missing authentication. IBM X-Force ID: 159518.</p>
  <p><strong>CVSS:</strong> 9.1 · <strong>CWE:</strong> CWE-306</p>
  <p><a href="https://nvd.nist.gov/vuln/detail/CVE-2019-4244">View on NVD</a></p>
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    </description>
  </item>
  <item>
    <title>[Critical] CVE-2019-5029 – An exploitable command injection vulnerability exists in the Config editor of th...</title>
    <link>https://nvd.nist.gov/vuln/detail/CVE-2019-5029</link>
    <guid isPermaLink="true">https://nvd.nist.gov/vuln/detail/CVE-2019-5029</guid>
    <pubDate>Wed, 13 Nov 2019 23:15:12 +0000</pubDate>
    <description>
<![CDATA[
  <p><strong><span class="badge risk critical">Critical</span> CVE-2019-5029</strong></p>
  <p>An exploitable command injection vulnerability exists in the Config editor of the Exhibitor Web UI versions 1.0.9 to 1.7.1. Arbitrary shell commands surrounded by backticks or $() can be inserted into the editor and will be executed by the Exhibitor process when it launches ZooKeeper. An attacker can execute any command as the user running the Exhibitor process.</p>
  <p><strong>CVSS:</strong> 9.8 · <strong>CWE:</strong> CWE-78</p>
  <p><a href="https://nvd.nist.gov/vuln/detail/CVE-2019-5029">View on NVD</a></p>
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    </description>
  </item>
  <item>
    <title>[High] CVE-2018-8012 – No authentication/authorization is enforced when a server attempts to join a quo...</title>
    <link>https://nvd.nist.gov/vuln/detail/CVE-2018-8012</link>
    <guid isPermaLink="true">https://nvd.nist.gov/vuln/detail/CVE-2018-8012</guid>
    <pubDate>Mon, 21 May 2018 19:29:00 +0000</pubDate>
    <description>
<![CDATA[
  <p><strong><span class="badge risk high">High</span> CVE-2018-8012</strong></p>
  <p>No authentication/authorization is enforced when a server attempts to join a quorum in Apache ZooKeeper before 3.4.10, and 3.5.0-alpha through 3.5.3-beta. As a result an arbitrary end point could join the cluster and begin propagating counterfeit changes to the leader.</p>
  <p><strong>CVSS:</strong> 7.5 · <strong>CWE:</strong> CWE-862</p>
  <p><a href="https://nvd.nist.gov/vuln/detail/CVE-2018-8012">View on NVD</a></p>
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    </description>
  </item>
  <item>
    <title>[High] CVE-2017-5637 – Two four letter word commands "wchp/wchc" are CPU intensive and could cause spik...</title>
    <link>https://nvd.nist.gov/vuln/detail/CVE-2017-5637</link>
    <guid isPermaLink="true">https://nvd.nist.gov/vuln/detail/CVE-2017-5637</guid>
    <pubDate>Tue, 10 Oct 2017 01:30:22 +0000</pubDate>
    <description>
<![CDATA[
  <p><strong><span class="badge risk high">High</span> CVE-2017-5637</strong></p>
  <p>Two four letter word commands "wchp/wchc" are CPU intensive and could cause spike of CPU utilization on Apache ZooKeeper server if abused, which leads to the server unable to serve legitimate client requests. Apache ZooKeeper thru version 3.4.9 and 3.5.2 suffer from this issue, fixed in 3.4.10, 3.5.3, and later.</p>
  <p><strong>CVSS:</strong> 7.5 · <strong>CWE:</strong> CWE-306</p>
  <p><a href="https://nvd.nist.gov/vuln/detail/CVE-2017-5637">View on NVD</a></p>
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    </description>
  </item>
  <item>
    <title>[Critical] CVE-2017-6711 – A vulnerability in the Ultra Automation Service (UAS) of the Cisco Ultra Service...</title>
    <link>https://nvd.nist.gov/vuln/detail/CVE-2017-6711</link>
    <guid isPermaLink="true">https://nvd.nist.gov/vuln/detail/CVE-2017-6711</guid>
    <pubDate>Thu, 06 Jul 2017 00:29:00 +0000</pubDate>
    <description>
<![CDATA[
  <p><strong><span class="badge risk critical">Critical</span> CVE-2017-6711</strong></p>
  <p>A vulnerability in the Ultra Automation Service (UAS) of the Cisco Ultra Services Framework could allow an unauthenticated, remote attacker to gain unauthorized access to a targeted device. The vulnerability is due to an insecure default configuration of the Apache ZooKeeper service used by the affected software. An attacker could exploit this vulnerability by accessing the affected device throug…</p>
  <p><strong>CVSS:</strong> 9.1 · <strong>CWE:</strong> CWE-287</p>
  <p><a href="https://nvd.nist.gov/vuln/detail/CVE-2017-6711">View on NVD</a></p>
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    </description>
  </item>
  <item>
    <title>[High] CVE-2016-5017 – Buffer overflow in the C cli shell in Apache Zookeeper before 3.4.9 and 3.5.x be...</title>
    <link>https://nvd.nist.gov/vuln/detail/CVE-2016-5017</link>
    <guid isPermaLink="true">https://nvd.nist.gov/vuln/detail/CVE-2016-5017</guid>
    <pubDate>Wed, 21 Sep 2016 14:25:12 +0000</pubDate>
    <description>
<![CDATA[
  <p><strong><span class="badge risk high">High</span> CVE-2016-5017</strong></p>
  <p>Buffer overflow in the C cli shell in Apache Zookeeper before 3.4.9 and 3.5.x before 3.5.3, when using the "cmd:" batch mode syntax, allows attackers to have unspecified impact via a long command string.</p>
  <p><strong>CVSS:</strong> 8.1 · <strong>CWE:</strong> CWE-119</p>
  <p><a href="https://nvd.nist.gov/vuln/detail/CVE-2016-5017">View on NVD</a></p>
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    </description>
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  <item>
    <title>[High] CVE-2015-1836 – Apache HBase 0.98 before 0.98.12.1, 1.0 before 1.0.1.1, and 1.1 before 1.1.0.1, ...</title>
    <link>https://nvd.nist.gov/vuln/detail/CVE-2015-1836</link>
    <guid isPermaLink="true">https://nvd.nist.gov/vuln/detail/CVE-2015-1836</guid>
    <pubDate>Mon, 21 Dec 2015 11:59:01 +0000</pubDate>
    <description>
<![CDATA[
  <p><strong><span class="badge risk high">High</span> CVE-2015-1836</strong></p>
  <p>Apache HBase 0.98 before 0.98.12.1, 1.0 before 1.0.1.1, and 1.1 before 1.1.0.1, as used in IBM InfoSphere BigInsights 3.0, 3.0.0.1, and 3.0.0.2 and other products, uses incorrect ACLs for ZooKeeper coordination state, which allows remote attackers to cause a denial of service (daemon outage), obtain sensitive information, or modify data via unspecified client traffic.</p>
  <p><strong>CVSS:</strong> 7.3 · <strong>CWE:</strong> CWE-284</p>
  <p><a href="https://nvd.nist.gov/vuln/detail/CVE-2015-1836">View on NVD</a></p>
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