CVE-2026-84439— Apache ZooKeeper 审计日志注入漏洞
一分钟漏洞结论
影响对象
Apache Software Foundation Apache ZooKeeper
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
When audit logging is enabled (zookeeper.audit.enable=true), an unauthenticated attacker can inject arbitrary fields into Apache ZooKeeper's audit log by sending a digest authentication request with tab characters (\t) embedded in the username. Because the aud
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一、 漏洞 CVE-2026-84439 基础信息
漏洞信息
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Vulnerability Title
Apache ZooKeeper: Audit log injection via unsanitized output from multiple sources
来源: CVE Program / CVE List V5
Vulnerability Description
When audit logging is enabled (zookeeper.audit.enable=true), an unauthenticated attacker can inject arbitrary fields into Apache ZooKeeper's audit log by sending a digest authentication request with tab characters (\t) embedded in the username. Because the audit log uses tab-separated key=value format, the injected tabs are parsed as legitimate field separators, allowing the attacker to spoof audit results (e.g., injecting result=success), forge operation types, and corrupt forensic evidence.
A log injection vulnerability in Apache ZooKeeper allows a client that can call setACL to inject forged key-value fields into zookeeper_audit.log. When audit logging is enabled, the server serializes attacker-controlled digest ACL ids into the acl= audit field without escaping tab characters. Because audit events are emitted as tab-separated key=value records, a crafted ACL id can make one successful setAcl event appear to contain forged fields such as operation=delete and znode=/forged. This undermines the integrity of downstream audit parsing, alerting, and incident response.
This issue affects Apache ZooKeeper: from 3.9.0 through 3.9.5, from 3.8.0 through 3.8.6.
Users are recommended to upgrade to version 3.9.6 or 3.8.7, which fixes the issue.
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
日志输出的转义处理不恰当
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| Apache Software Foundation | Apache ZooKeeper | 3.9.0 ~ 3.9.5 | - |
|
二、漏洞 CVE-2026-84439 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-84439 其他参考 (1)
同批安全公告 · Apache Software Foundation · 2026-09-16 · 共 13 条
| CVE-2026-84501 | Apache ZooKeeper EnsembleAuthenticationProvider 操作日志伪造漏洞 | |
| CVE-2026-79993 | Apache ZooKeeper 容器节点删除权限缺失漏洞 | |
| CVE-2026-59969 | ZooKeeper FIPS模式下主机不匹配证书验证不当 | |
| CVE-2026-59739 | Apache ZooKeeper 重连重放信息泄露 | |
| CVE-2026-86466 | Apache Airflow FAB提供商认证令牌校验缺失 | |
| CVE-2026-76187 | Apache Airflow Keycloak 任意客户端凭证会话劫持漏洞 | |
| CVE-2026-76186 | Apache Airflow Keycloak令牌会话绑定缺失 | |
| CVE-2026-82310 | Airflow FAB认证失效用户保留核心API权限 | |
| CVE-2026-86792 | Apache Kafka provider 远程代码执行漏洞 | |
| CVE-2026-86462 | Apache Airflow FAB密码更新未失效会话漏洞 | |
| CVE-2026-82311 | Apache Airflow FAB 密码重置会话失效失败 | |
| CVE-2026-86465 | Airflow Akeyless Provider 作用域绕过漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-84439
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