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Apache Flink Improper Access Control Vulnerability

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.

Published 7 Oct 2026Updated 7 Oct 2026459 sources
CVSS 0.0 ✓ VERIFIED REFERENCE△ CISA KEV
Overview Sources History

What happened

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.

Affected versions

Flink: See original advisory Fixed: See vendor advisory.

Why it matters

This source correlation may provide earlier visibility while structured CVE metadata is still being updated.

Detection & mitigation

  • Review the original advisory and validate affected versions.
  • Apply vendor-provided updates or mitigations when available.

Public PoC references

RepositoryAuthorFirst seenReference
Exploit-DB 49398Apache Flink 1.11.0 - Unauthenticated Arbitrary File Read (Metasploit)SunCSR Team2021-01-08VerifiedPoC-in-GitHub · B1anda0/CVE-2020-17519Apache Flink 目录遍历漏洞批量检测 (CVE-2020-17519)★ 47B1anda02021-01-06CandidatePoC-in-GitHub · QmF0c3UK/CVE-2020-17519★ 1QmF0c3UK2021-01-06CandidatePoC-in-GitHub · dolevf/apache-flink-directory-traversal.nseApache Flink Directory Traversal (CVE-2020-17519) Nmap NSE Script★ 3dolevf2021-01-06CandidatePoC-in-GitHub · dev-team-12x/CVE-2020-17519CVE-2020-17519★ 0dev-team-12x2021-01-08CandidatePoC-in-GitHub · murataydemir/CVE-2020-17519[CVE-2020-17519] Apache Flink RESTful API Arbitrary File Read★ 8murataydemir2021-01-10CandidatePoC-in-GitHub · radbsie/CVE-2020-17519-ExpCVE-2020-17519 EXP★ 0radbsie2021-01-14CandidatePoC-in-GitHub · yaunsky/CVE-2020-17519-Apache-FlinkCVE-2020-17519; Apache Flink 任意文件读取; 批量检测★ 1yaunsky2021-01-18CandidatePoC-in-GitHub · Osyanina/westone-CVE-2020-17519-scannerA vulnerability scanner that detects CVE-2020-17519 vulnerabilities.★ 0Osyanina2021-02-25CandidatePoC-in-GitHub · givemefivw/CVE-2020-17519CVE-2020-17519 Cheetah★ 1givemefivw2021-04-13CandidatePoC-in-GitHub · MrCl0wnLab/SimplesApachePathTraversalTool check: CVE-2021-41773, CVE-2021-42013, CVE-2020-17519★ 61MrCl0wnLab2021-10-13CandidatePoC-in-GitHub · zhangweijie11/CVE-2020-17519★ 0zhangweijie112022-03-08CandidatePoC-in-GitHub · GazettEl/CVE-2020-17519★ 0GazettEl2025-03-02CandidatePoC-in-GitHub · shoucheng3/apache__flink_CVE-2020-17519_1-11-2★ 0shoucheng32025-08-20CandidatePoC-in-GitHub · CyberCTF/vulhub-flink-cve-2020-17519Vulhub flink/CVE-2020-17519: Apache Flink JobManager Directory Traversal (CVE-2020-17519), run with Isoloom★ 0CyberCTF2026-10-08Candidate
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