CISA-confirmed known exploited vulnerability

CVE-2020-17519

Apache Flink Improper Access Control Vulnerability

Apache · Flink

Vulnerability details

Apache Flink contains an improper access control vulnerability that allows an attacker to read any file on the local filesystem of the JobManager through its REST interface.

Added to CISA KEV: 2024-05-23

Ransomware campaign use: Unknown

CISA due date: 2024-06-13

Defensive guidance from CISA

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

This is the source's required-action field, not an independently validated patch procedure. Refer to the vendor for exact affected versions and fixes.

Source catalog date: 2026-11-06T19:44:45.1797Z · Last retrieved: 2026-11-06 21:02:26 UTC

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