SARA / Free Tools / KEV / CVE-2020-17519

CVE-2020-17519 on CISA KEV

A change introduced in Apache Flink 1.11.0 (and released in 1.11.1 and 1.11.2 as well) allows attackers to read any file on the local filesystem of the JobManager through the REST interface of the JobManager process. Access is restricted to files accessible by the JobManager proc

CISA KEV — Actively Exploited

Apache Flink Improper Access Control Vulnerability

Vendor / Product
— / Apache / Flink
Added to KEV
2024-05-23
BOD 22-01 due
2024-06-13
Ransomware use
Unknown
CVSS / EPSS
— — · EPSS 94.38%

01What CISA says about this vulnerability

A change introduced in Apache Flink 1.11.0 (and released in 1.11.1 and 1.11.2 as well) allows attackers to read any file on the local filesystem of the JobManager through the REST interface of the JobManager process. Access is restricted to files accessible by the JobManager process. All users should upgrade to Flink 1.11.3 or 1.12.0 if their Flink instance(s) are exposed. The issue was fixed in…

02Required action — verbatim from CISA

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

03Notes & references

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

VendorProductVersions
Apache Software FoundationApache FlinkApache Flink 1.11.0 to 1.11.2

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

Open in Sigma generator →

Programmatic KEV data?
SARA's API returns KEV, CVSS, EPSS + analyst summary in one call.
Read the API reference →
Full CVE detail → Search KEV →