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01 Record

CVE-2020-17518

Apache Flink directory traversal attack: remote file writing through the REST API

UnratedPUBLISHEDCNA: apache
CNA base scoreUnratedNo CNA CVSS vector
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02 Description

Apache Flink directory traversal attack: remote file writing through the REST API

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
49.10% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 98.8% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2021-01-05 11:40Z5 YR AGO
Last updated
2025-02-13 16:27Z1 YR AGO
Reserved
2020-08-12
Assigning CNA
apache
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-23Relative Path TraversalBase
  • CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base
Data version
5.1
Document digest
23b8e06c8e8d8c1355b3456531a8a984585ab77f54d7fb1c744febae0361b9ff

05 Affected products

VendorProductVersionsPlatforms
Apache Software FoundationApache FlinkApache Flink 1.5.1 to 1.11.2—

06 References