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CVE-2020-17519

98
FAUCET Score

CVE-2020-17519 is a critical local file inclusion vulnerability affecting Apache Flink versions 1.11.0 through 1.11.2, allowing unauthenticated attackers to read any file on the JobManager's local filesystem via its REST interface. With a CVSS score of 7.5 (High) and an EPSS score of 0.94383, this vulnerability is easily exploitable over the network with no user interaction, leading to high confidentiality impact. It is actively exploited in the wild, with public exploit code available in Metasploit and Nuclei, and has garnered significant community discussion, indicating a high risk to unpatched systems. All users are urged to upgrade to Flink 1.11.3 or 1.12.0 immediately if their instances are exposed.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.11.0, < 1.11.3CPE matchmatch criteria
cpe:2.3:a:apache:flink:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
97.86%
Probability of exploitation in next 30 days
EPSS Percentile
99.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Added to KEV · May 23, 2024
Metasploit: Apache Flink JobManager Traversal · Jan 5, 2021
Nuclei: CVE-2020-17519 · Jan 6, 2021
ExploitDB: EDB-49398 · Jan 8, 2021
This CVE's current EPSS score of 0.9786 is in the 100th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

mavenpatch availablevia ghsa
Product: org.apache.flink:flink-runtime_2.11Fixed in: 1.11.3
mavenpatch availablevia ghsa
Product: org.apache.flink:flink-runtime_2.12Fixed in: 1.11.3

Vendor Advisories (2)

mavenGHSA-395w-qhqr-9fr6high

Path Traversal in Apache Flink

Jan 6, 2021
redhatCVE-2020-17519Moderate

apache-flink: directory traversal attack allows reading remote files through the REST API

Jan 5, 2021

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
packetstormsecurity.com / files/160849/Apache-Flink-1.11.0-Arbitrary-File-Read-Directory-Traversal.html
ExploitThird Party AdvisoryVDB Entry
lists.apache.org / thread.html/r0a433be10676f4fe97ca423d08f914e0ead341c901216f292d2bbe83%40%3Cissues.flink.apache.org%3E
Mailing List
lists.apache.org / thread.html/r1125f3044a0946d1e7e6f125a6170b58d413ebd4a95157e4608041c7%40%3Cannounce.apache.org%3E
Mailing List
lists.apache.org / thread.html/r229167538863518738e02f4c1c5a8bb34c1d45dadcc97adf6676b0c1%40%3Cdev.flink.apache.org%3E
Issue Tracking
lists.apache.org / thread.html/r26fcdd4fe288323006253437ebc4dd6fdfadfb5e93465a0e4f68420d%40%3Cuser-zh.flink.apache.org%3E
Issue Tracking
lists.apache.org / thread.html/r28f17e564950d663e68cc6fe75756012dda62ac623766bb9bc5e7034%40%3Cissues.flink.apache.org%3E
Issue Tracking
lists.apache.org / thread.html/r2fc60b30557e4a537c2a6293023049bd1c49fd92b518309aa85a0398%40%3Cissues.flink.apache.org%3E
Issue Tracking
lists.apache.org / thread.html/r4e1b72bfa789ea5bc20b8afe56119200ed25bdab0eb80d664fa5bfe2%40%3Cdev.flink.apache.org%3E
Mailing ListVendor Advisory
lists.apache.org / thread.html/r6843202556a6d0bce9607ebc02e303f68fc88e9038235598bde3b50d%40%3Cannounce.apache.org%3E
Mailing ListVendor Advisory
lists.apache.org / thread.html/r6843202556a6d0bce9607ebc02e303f68fc88e9038235598bde3b50d%40%3Cdev.flink.apache.org%3E
Mailing ListVendor Advisory
lists.apache.org / thread.html/r6843202556a6d0bce9607ebc02e303f68fc88e9038235598bde3b50d%40%3Cuser.flink.apache.org%3E
Issue Tracking
lists.apache.org / thread.html/r88b55f3ebf1f8f4e1cc61f030252aaef4b77060b56557a243abb92a1%40%3Cissues.flink.apache.org%3E
Mailing ListVendor Advisory
lists.apache.org / thread.html/r88f427865fb6aa6e6378efe07632a1906b430365e15e3b9621aabe1d%40%3Cissues.flink.apache.org%3E
Mailing ListVendor Advisory
lists.apache.org / thread.html/r90890afea72a9571d666820b2fe5942a0a5f86be406fa31da3dd0922%40%3Cannounce.apache.org%3E
Mailing ListNot Applicable
lists.apache.org / thread.html/ra8c96bf3ccb4e491f9ce87ba35f134b4449beb2a38d1ce28fd89001f%40%3Cdev.flink.apache.org%3E
Issue Tracking
openwall.com / lists/oss-security/2021/01/05/2
Mailing ListThird Party Advisory