High severityOSV Advisory· Published Jan 5, 2026· Updated Jan 5, 2026
Apache Kyuubi: Unauthorized directory access due to missing path normalization
CVE-2025-66518
Description
Any client who can access to Apache Kyuubi Server via Kyuubi frontend protocols can bypass server-side config kyuubi.session.local.dir.allow.list and use local files which are not listed in the config.
This issue affects Apache Kyuubi: from 1.6.0 through 1.10.2.
Users are recommended to upgrade to version 1.10.3 or upper, which fixes the issue.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
org.apache.kyuubi:kyuubi-server_2.12Maven | >= 1.6.0, < 1.10.3 | 1.10.3 |
Affected products
2Patches
Vulnerability mechanics
References
4- github.com/advisories/GHSA-f8r6-6222-9pvcghsaADVISORY
- lists.apache.org/thread/xp460bwbyzdhho34ljd4nchyt2fmhodlghsavendor-advisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2025-66518ghsaADVISORY
- www.openwall.com/lists/oss-security/2026/01/05/1ghsaWEB
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