CVSS v3
7.5
HIGH
EPSS Score
93.8%
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Apache Flink 1.5.1 introduced a REST handler that allows you to write an uploaded file to an arbitrary location on the local file system, through a maliciously modified HTTP HEADER. The files can be written to any location accessible by Flink 1.5.1. 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 commit a5264a6f41524afe8ceadf1d8ddc8c80f323ebc4 from apache/flink:master.
Apache Flink 1.5.1 introduced a REST handler that allows you to write an uploaded file to an arbitrary location on the local file system, through a maliciously modified HTTP HEADER. The files can be written to any location accessible by Flink 1.5.1. 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 commit a5264a6f41524afe8ceadf1d8ddc8c80f323ebc4 from apache/flink:master.
Active exploitation of CVE-2020-17518 has not been confirmed. The EPSS score is 93.8%, indicating the estimated probability of exploitation in the next 30 days.
CVE-2020-17518 has a CVSS v3 base score of 7.5 (HIGH severity).
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Ranked by exploit probability (EPSS).