Apache Kylin: Unauthenticated access to system cleanup actions
Summary
Apache Kylin versions 4.0.0 through 5.0.4 allow an unauthenticated user to access system cleanup actions, which affects the metastore. The CVSS base score is 9.8 (critical). According to the vendor, the impact mainly concerns Kylin services that are directly exposed to the public internet, which is uncommon, and in-house deployments are mostly not affected.
Affected
- Apache Kylin 4.0.0 through 5.0.4
- Default configuration: unaffected (per CVE record)
- Lower bound of the range is not fully confirmed by all sources; check the Apache advisory.
Fixed in
- Apache Kylin 5.0.5 (upgrade recommended by the vendor, tracked as KYLIN-6093)
Workaround
- No official vendor workaround found.
- Unverified practice: keep Kylin off the public internet and restrict access to its web and API ports to admin or internal networks until the upgrade is done.
Exploitation
- No known exploitation in the wild found.
- CISA SSVC: Exploitation none, Automatable yes, Technical Impact total.
- No public proof of concept found.
Our recommendation
- Check the asset inventory for any Kylin instance, including Docker and test environments.
- Confirm that no Kylin instance is reachable from the internet (external scan or firewall review).
- Upgrade affected instances to Apache Kylin 5.0.5 after checking the Apache advisory for the exact affected range.
- Review other Kylin CVEs published at the same time.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Apache Kylin mailing list advisory lists.apache.org
- oss-security post CVE-2026-68573 www.openwall.com
- VulDB CVE-2026-68573 vuldb.com
- Strix CVE-2026-68573 www.strix.ai
- TheHackerWire CVE-2026-68573 www.thehackerwire.com
- SecurityFocus CVE-2026-68573 www.securityfocus.com
- Apache Kylin project kylin.apache.org
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 30 Oct 2026, 17:37.
Original description (NVD)
Improper Authentication vulnerability in Apache Kylin. Unauthenticated user may access to system cleanup actions. Impact most to the kylin services that are directly exposed to public network, which is not common. In-house kylin deployments are mostly not impacted. This issue affects Apache Kylin: from 4 through 5.0.4. Users are recommended to upgrade to version 5.0.5, which fixes the issue.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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