CVE-2025-66518
Apache Kyuubi: Unauthorized directory access due to missing path normalization
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Passive
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Apache Kyuubi: Unauthorized directory access due to missing path normalization
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.
- Record
CVE-2025-66518- CVSS 4.0
- 8.8 High
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L - Weakness
- CWE-27
- Updated
- 2026-11-02
EUVDEUVD-2026-0819
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.
- Record
EUVD-2026-0819- CVSS 4.0
- 8.8 High
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-f8r6-6222-9pvc
Apache Kyuubi Server vulnerable to Path Traversal
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.
- Record
GHSA-f8r6-6222-9pvc- CVSS 4.0
- 8.8 High
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L - Weakness
- CWE-22, CWE-27
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2025-66518- CVSS 4.0
- 8.8 High
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-27, CWE-22
- Updated
- 2026-11-02
OSV
Apache Kyuubi: Unauthorized directory access due to missing path normalization
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.
- Record
CVE-2025-66518- CVSS 4.0
- 8.8 High
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L - Weakness
- CWE-27
- Updated
- 2026-11-02
OSVGHSA-f8r6-6222-9pvc
Apache Kyuubi Server vulnerable to Path Traversal
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.
- Record
GHSA-f8r6-6222-9pvc- CVSS 4.0
- 8.8 High
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L - Weakness
- CWE-22, CWE-27
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.apache.kyuubi:kyuubi-server_2.12Maven |
1.6.0 up to 1.10.3 | 1.10.3 |
org.apache.kyuubi:kyuubi-server_2.12Maven |
1.6.0 up to 1.10.3, plus listed versions 1.10.01.10.11.10.21.6.0-incubating1.6.1-incubating Show 14 moreShow less1.7.01.7.11.7.21.7.31.7.41.8.01.8.11.8.21.8.31.9.01.9.11.9.21.9.31.9.4 |
1.10.3 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-66518 is a high vulnerability (CVSS 8.8) in Apache Kyuubi, published January 5, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.00%, the 62nd percentile. Fixed in org.apache.kyuubi:kyuubi-server_2.12 1.10.3.
References
lists.apache.org/thread/xp460bwbyzdhho34ljd4nchyt2fmhodl
openwall.com/lists/oss-security/2026/01/05/1
nvd.nist.gov/vuln/detail/CVE-2025-66518
github.com/advisories/GHSA-f8r6-6222-9pvc
repo.maven.apache.org/maven2