Apache ZooKeeper: Apache ZooKeeper: Impersonation of servers or clients via reverse DNS spoofing

A flaw was found in Apache ZooKeeper. The ZKTrustManager component's hostname verification process can fall back to reverse DNS PTR lookup when IP Subject Alternative Name SAN validation fails. This vulnerability allows an attacker who can control or spoof PTR records to impersonate ZooKeeper...

Apache ZooKeeper: Apache ZooKeeper: Information disclosure via improper handling of configuration values

A flaw was found in Apache ZooKeeper. Improper handling of configuration values in ZKConfig allows an attacker to expose sensitive information. This occurs when sensitive client configuration values are logged at an INFO level in the client's logfile. This vulnerability can lead to information...

Apache ZooKeeper: Apache ZooKeeper: Impersonation of servers or clients via reverse DNS spoofing

A flaw was found in Apache ZooKeeper. The ZKTrustManager component's hostname verification process can fall back to reverse DNS PTR lookup when IP Subject Alternative Name SAN validation fails. This vulnerability allows an attacker who can control or spoof PTR records to impersonate ZooKeeper...

Apache ZooKeeper: Apache ZooKeeper: Information disclosure via improper handling of configuration values

A flaw was found in Apache ZooKeeper. Improper handling of configuration values in ZKConfig allows an attacker to expose sensitive information. This occurs when sensitive client configuration values are logged at an INFO level in the client's logfile. This vulnerability can lead to information...

Apache ZooKeeper: Apache ZooKeeper: Information disclosure via improper handling of configuration values

A flaw was found in Apache ZooKeeper. Improper handling of configuration values in ZKConfig allows an attacker to expose sensitive information. This occurs when sensitive client configuration values are logged at an INFO level in the client's logfile. This vulnerability can lead to information...

BIT-ZOOKEEPER-2026-24308 Apache ZooKeeper: Sensitive information disclosure in client configuration handling

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 producti...

GHSA-CRHR-QQJ8-RPXC Apache ZooKeeper has improper handling of configuration values

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 producti...

EUVD-2026-10139

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...

Apache Zookeeper 安全漏洞

Apache Zookeeper is a software project of the Apache Foundation in the United States. It provides open-source distributed configuration services, synchronization services, and naming and registration functions for large-scale distributed computing systems. Versions 3.8.5 and 3.9.4 of Apache...

CVE-2025-58457

CVE-2025-58457 is an issue in ZooKeeper AdminServer where an improper permission check allows an authenticated client with insufficient privileges to run snapshot and restore commands. Affected versions are Apache ZooKeeper 3.9.0 through 3.9.3; the fix is available in 3.9.4.Mitigation steps from ...

CVE-2025-58457 Apache ZooKeeper: Insufficient Permission Check in AdminServer Snapshot/Restore Commands

Improper permission check in ZooKeeper AdminServer lets authorized clients to run snapshot and restore command with insufficient permissions. This issue affects Apache ZooKeeper: from 3.9.0 before 3.9.4. Users are recommended to upgrade to version 3.9.4, which fixes the issue. The issue can be...

Apache ZooKeeper 安全漏洞

Apache Zookeeper is a software project of the Apache USA Foundation that provides open source distributed configuration services, synchronization services, and named registries for large-scale distributed computing. A security vulnerability exists in Apache ZooKeeper versions 3.9.0 through prior ...

Authentication Bypass

Apache ZooKeeper is vulnerable to Authentication Bypass. The vulnerability is due to weak client IP address validation in IPAuthenticationProvider, where the Admin Server trusts the X-Forwarded-For HTTP header by default, allowing attackers to spoof their IP address and bypass IP-based...

GHSA-G93M-8X6H-G5GV Apache ZooKeeper: Authentication bypass with IP-based authentication in Admin Server

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...

zookeeper: Authorization Bypass in Apache ZooKeeper

A flaw was found in Apache ZooKeeper. Authorization bypass through user-controlled key is available iff SASL Quorum Peer authentication is enabled in ZooKeeper via quorum.auth.enableSasl=true configuration. A malicious user could bypass the authentication controller by using a non-existing instan...

Apache ZooKeeper Security Vulnerability

Apache Zookeeper is a software project of the Apache Foundation that provides open source distributed configuration services, synchronization services, and named registries for large-scale distributed computing. A security vulnerability exists in Apache ZooKeeper versions prior to 3.9.1, 3.8.3, a...

PT-2023-6096 · Apache +3 · Apache Zookeeper +3

Name of the Vulnerable Software and Affected Versions: Apache ZooKeeper versions prior to 3.7.2 Apache ZooKeeper versions prior to 3.8.3 Apache ZooKeeper versions prior to 3.9.1 Description: The issue is related to an Authorization Bypass Through User-Controlled Key vulnerability in Apache...

GHSA-7CWJ-J333-X7F7 Uncontrolled Resource Consumption in Apache ZooKeeper

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,...

zookeeper: Information disclosure in Apache ZooKeeper

A flaw was found in Apache ZooKeeper. A lack of permission checks while retrieving ACLs allows unsalted hash values to be disclosed for unauthenticated or unprivileged users...

zookeeper: Information disclosure in Apache ZooKeeper

A flaw was found in Apache ZooKeeper. A lack of permission checks while retrieving ACLs allows unsalted hash values to be disclosed for unauthenticated or unprivileged users...