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Apache CVE-2026-84439

| EUVDEUVD-2026-80333 HIGH
Improper Output Neutralization for Logs (CWE-117)
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Lifecycle Timeline

2
Analysis Generated
Sep 15, 2026 - 20:15 vuln.today
CVE Published
Sep 15, 2026 - 18:26 oss-security
HIGH

Description PRE-NVD

Disclosed via oss-security. NVD scoring and full description are pending.

AnalysisAI

Audit log injection in Apache ZooKeeper 3.9.0–3.9.5 and 3.8.0–3.8.6 allows attackers to forge entries in zookeeper_audit.log when audit logging is enabled. An unauthenticated attacker can embed tab characters in a digest authentication username to inject arbitrary tab-separated key=value fields, and a client permitted to call setACL can embed tabs in a digest ACL id to make a successful setAcl event appear to record forged operations such as operation=delete and znode=/forged. …

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CVE-2026-84439 vulnerability details – vuln.today

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