CVE-2020-17519Apache Flink directory traversal attack: reading remote files through the REST API
Updated under an hour ago ()
Does this affect you?
It affects Apache Software Foundation Apache Flink and 1 other product. Add what you run to find out whether that includes you.
CISA lists it as known exploited since May 23, 2024; federal agencies had to remediate by Jun 13, 2024. Treat that date as your deadline.
Do this next
Free account, 1 product
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.
- CVSS
- 9.1 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- Weakness (CWE)
- CWE-552
- Known exploited
- Added to CISA KEV May 23, 2024; federal remediation due Jun 13, 2024Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 97.81% (percentile 100)
- Assigned by
- apache
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Apache Software Foundation Apache Flink apache_software_foundation:apache_flink (from the name) | Apache Flink 1.11.0 to 1.11.2 | CNA record |
apache flink apache:flink | from 1.11.0 through 1.11.2 | CISA ADP |
apache flink apache:flink | from 1.11.0 before 1.11.3 | NVD |
References
- https://lists.apache.org/thread.html/r6843202556a6d0bce9607ebc02e303f68fc88e9038235598bde3b50d%40%3Cdev.flink.apache.org%3Ex-refsource-misc, mailing-list, vendor-advisory
- https://lists.apache.org/thread.html/r6843202556a6d0bce9607ebc02e303f68fc88e9038235598bde3b50d%40%3Cuser.flink.apache.org%3Emailing-list, x-refsource-mlist, issue-tracking
- https://lists.apache.org/thread.html/r6843202556a6d0bce9607ebc02e303f68fc88e9038235598bde3b50d%40%3Cannounce.apache.org%3Emailing-list, x-refsource-mlist, vendor-advisory
- http://www.openwall.com/lists/oss-security/2021/01/05/2mailing-list, x-refsource-mlist, third-party-advisory
- https://lists.apache.org/thread.html/r28f17e564950d663e68cc6fe75756012dda62ac623766bb9bc5e7034%40%3Cissues.flink.apache.org%3Emailing-list, x-refsource-mlist, issue-tracking
- http://packetstormsecurity.com/files/160849/Apache-Flink-1.11.0-Arbitrary-File-Read-Directory-Traversal.htmlx-refsource-misc, exploit, third-party-advisory, vdb-entry
- https://lists.apache.org/thread.html/r2fc60b30557e4a537c2a6293023049bd1c49fd92b518309aa85a0398%40%3Cissues.flink.apache.org%3Emailing-list, x-refsource-mlist, issue-tracking
- https://lists.apache.org/thread.html/r4e1b72bfa789ea5bc20b8afe56119200ed25bdab0eb80d664fa5bfe2%40%3Cdev.flink.apache.org%3Emailing-list, x-refsource-mlist, vendor-advisory
- https://lists.apache.org/thread.html/r0a433be10676f4fe97ca423d08f914e0ead341c901216f292d2bbe83%40%3Cissues.flink.apache.org%3Emailing-list, x-refsource-mlist
- https://lists.apache.org/thread.html/r88b55f3ebf1f8f4e1cc61f030252aaef4b77060b56557a243abb92a1%40%3Cissues.flink.apache.org%3Emailing-list, x-refsource-mlist, vendor-advisory
- https://lists.apache.org/thread.html/r88f427865fb6aa6e6378efe07632a1906b430365e15e3b9621aabe1d%40%3Cissues.flink.apache.org%3Emailing-list, x-refsource-mlist, vendor-advisory
- https://lists.apache.org/thread.html/ra8c96bf3ccb4e491f9ce87ba35f134b4449beb2a38d1ce28fd89001f%40%3Cdev.flink.apache.org%3Emailing-list, x-refsource-mlist, issue-tracking
- https://lists.apache.org/thread.html/r229167538863518738e02f4c1c5a8bb34c1d45dadcc97adf6676b0c1%40%3Cdev.flink.apache.org%3Emailing-list, x-refsource-mlist, issue-tracking
- https://lists.apache.org/thread.html/r90890afea72a9571d666820b2fe5942a0a5f86be406fa31da3dd0922%40%3Cannounce.apache.org%3Emailing-list, x-refsource-mlist, not-applicable
- https://lists.apache.org/thread.html/r1125f3044a0946d1e7e6f125a6170b58d413ebd4a95157e4608041c7%40%3Cannounce.apache.org%3Emailing-list, x-refsource-mlist
- https://lists.apache.org/thread.html/r26fcdd4fe288323006253437ebc4dd6fdfadfb5e93465a0e4f68420d%40%3Cuser-zh.flink.apache.org%3Ex-refsource-misc, issue-tracking
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-17519us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.