High severityCISA KEVNVD Advisory· Published Jan 5, 2021· Updated Oct 21, 2025
Apache Flink directory traversal attack: reading remote files through the REST API
CVE-2020-17519
Description
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 commit b561010b0ee741543c3953306037f00d7a9f0801 from apache/flink:master.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
org.apache.flink:flink-runtime_2.11Maven | >= 1.11.0, < 1.11.3 | 1.11.3 |
org.apache.flink:flink-runtime_2.12Maven | >= 1.11.0, < 1.11.3 | 1.11.3 |
Affected products
4- osv-coords3 versionspkg:bitnami/flinkpkg:maven/org.apache.flink/flink-runtime_2.11pkg:maven/org.apache.flink/flink-runtime_2.12
>= 1.11.0, < 1.11.3+ 2 more
- (no CPE)range: >= 1.11.0, < 1.11.3
- (no CPE)range: >= 1.11.0, < 1.11.3
- (no CPE)range: >= 1.11.0, < 1.11.3
- Apache Software Foundation/Apache Flinkv5Range: Apache Flink 1.11.0 to 1.11.2
Patches
Vulnerability mechanics
References
33- github.com/advisories/GHSA-395w-qhqr-9fr6ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2020-17519ghsaADVISORY
- packetstormsecurity.com/files/160849/Apache-Flink-1.11.0-Arbitrary-File-Read-Directory-Traversal.htmlghsax_refsource_MISCWEB
- www.openwall.com/lists/oss-security/2021/01/05/2ghsamailing-listx_refsource_MLISTWEB
- lists.apache.org/thread.html/r0a433be10676f4fe97ca423d08f914e0ead341c901216f292d2bbe83%40%3Cissues.flink.apache.org%3Eghsamailing-listx_refsource_MLISTWEB
- lists.apache.org/thread.html/r0a433be10676f4fe97ca423d08f914e0ead341c901216f292d2bbe83@%3Cissues.flink.apache.org%3EghsaWEB
- lists.apache.org/thread.html/r1125f3044a0946d1e7e6f125a6170b58d413ebd4a95157e4608041c7%40%3Cannounce.apache.org%3Eghsamailing-listx_refsource_MLISTWEB
- lists.apache.org/thread.html/r1125f3044a0946d1e7e6f125a6170b58d413ebd4a95157e4608041c7@%3Cannounce.apache.org%3EghsaWEB
- lists.apache.org/thread.html/r229167538863518738e02f4c1c5a8bb34c1d45dadcc97adf6676b0c1%40%3Cdev.flink.apache.org%3Eghsamailing-listx_refsource_MLISTWEB
- lists.apache.org/thread.html/r229167538863518738e02f4c1c5a8bb34c1d45dadcc97adf6676b0c1@%3Cdev.flink.apache.org%3EghsaWEB
- lists.apache.org/thread.html/r26fcdd4fe288323006253437ebc4dd6fdfadfb5e93465a0e4f68420d%40%3Cuser-zh.flink.apache.org%3Eghsax_refsource_MISCWEB
- lists.apache.org/thread.html/r26fcdd4fe288323006253437ebc4dd6fdfadfb5e93465a0e4f68420d@%3Cuser-zh.flink.apache.org%3EghsaWEB
- lists.apache.org/thread.html/r28f17e564950d663e68cc6fe75756012dda62ac623766bb9bc5e7034%40%3Cissues.flink.apache.org%3Eghsamailing-listx_refsource_MLISTWEB
- lists.apache.org/thread.html/r28f17e564950d663e68cc6fe75756012dda62ac623766bb9bc5e7034@%3Cissues.flink.apache.org%3EghsaWEB
- lists.apache.org/thread.html/r2fc60b30557e4a537c2a6293023049bd1c49fd92b518309aa85a0398%40%3Cissues.flink.apache.org%3Eghsamailing-listx_refsource_MLISTWEB
- lists.apache.org/thread.html/r2fc60b30557e4a537c2a6293023049bd1c49fd92b518309aa85a0398@%3Cissues.flink.apache.org%3EghsaWEB
- lists.apache.org/thread.html/r4e1b72bfa789ea5bc20b8afe56119200ed25bdab0eb80d664fa5bfe2%40%3Cdev.flink.apache.org%3Eghsamailing-listx_refsource_MLISTWEB
- lists.apache.org/thread.html/r4e1b72bfa789ea5bc20b8afe56119200ed25bdab0eb80d664fa5bfe2@%3Cdev.flink.apache.org%3EghsaWEB
- lists.apache.org/thread.html/r6843202556a6d0bce9607ebc02e303f68fc88e9038235598bde3b50d%40%3Cannounce.apache.org%3Eghsamailing-listx_refsource_MLISTWEB
- lists.apache.org/thread.html/r6843202556a6d0bce9607ebc02e303f68fc88e9038235598bde3b50d%40%3Cdev.flink.apache.org%3Eghsax_refsource_MISCmailing-listx_refsource_MLISTWEB
- lists.apache.org/thread.html/r6843202556a6d0bce9607ebc02e303f68fc88e9038235598bde3b50d%40%3Cuser.flink.apache.org%3Eghsamailing-listx_refsource_MLISTWEB
- lists.apache.org/thread.html/r6843202556a6d0bce9607ebc02e303f68fc88e9038235598bde3b50d@%3Cannounce.apache.org%3EghsaWEB
- lists.apache.org/thread.html/r6843202556a6d0bce9607ebc02e303f68fc88e9038235598bde3b50d@%3Cdev.flink.apache.org%3EghsaWEB
- lists.apache.org/thread.html/r6843202556a6d0bce9607ebc02e303f68fc88e9038235598bde3b50d@%3Cuser.flink.apache.org%3EghsaWEB
- lists.apache.org/thread.html/r88b55f3ebf1f8f4e1cc61f030252aaef4b77060b56557a243abb92a1%40%3Cissues.flink.apache.org%3Eghsamailing-listx_refsource_MLISTWEB
- lists.apache.org/thread.html/r88b55f3ebf1f8f4e1cc61f030252aaef4b77060b56557a243abb92a1@%3Cissues.flink.apache.org%3EghsaWEB
- lists.apache.org/thread.html/r88f427865fb6aa6e6378efe07632a1906b430365e15e3b9621aabe1d%40%3Cissues.flink.apache.org%3Eghsamailing-listx_refsource_MLISTWEB
- lists.apache.org/thread.html/r88f427865fb6aa6e6378efe07632a1906b430365e15e3b9621aabe1d@%3Cissues.flink.apache.org%3EghsaWEB
- lists.apache.org/thread.html/r90890afea72a9571d666820b2fe5942a0a5f86be406fa31da3dd0922%40%3Cannounce.apache.org%3Eghsamailing-listx_refsource_MLISTWEB
- lists.apache.org/thread.html/r90890afea72a9571d666820b2fe5942a0a5f86be406fa31da3dd0922@%3Cannounce.apache.org%3EghsaWEB
- lists.apache.org/thread.html/ra8c96bf3ccb4e491f9ce87ba35f134b4449beb2a38d1ce28fd89001f%40%3Cdev.flink.apache.org%3Eghsamailing-listx_refsource_MLISTWEB
- lists.apache.org/thread.html/ra8c96bf3ccb4e491f9ce87ba35f134b4449beb2a38d1ce28fd89001f@%3Cdev.flink.apache.org%3EghsaWEB
- www.cisa.gov/known-exploited-vulnerabilities-catalogghsaWEB
News mentions
0No linked articles in our index yet.