Apache Hadoop Vulnerability Exposes Systems to Crashes and Data Corruption

Cyberpress • January 26, 2026

... Vulnerabilities . Apache Hadoop, a widely deployed distributed storage and processing framework, faces a critical vulnerability in its HDFS native ...

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Critical Apache Hadoop Vulnerability Allows Data Corruption and System Crashes A moderate-severity vulnerability in Apache Hadoop's HDFS native client could allow attackers to cause system crashes or corrupt data via malicious URI inputs. This flaw, tracked as CVE-2025-27821, affects versions 3.2.0 through 3.4.1 and is due to an out-of-bounds write issue in the URI parser. 3 sources 30

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Platforms (1)

Apache Hadoop