PatchTheCVECVE-2026-62391: The security fix for CVE-2025-66518 is incomplete. Any client who can access to Apache Kyuubi Server via Kyuub
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HIGH 8.1WATCHLISTUPGRADE
CVE-2026-62391 is a high-severity flaw (CVSS 8.1) affecting kyuubi. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The security fix for CVE-2025-66518 is incomplete. Any client who can access to Apache Kyuubi Server via Kyuubi frontend protocols can bypass server-side config kyuubi.session.local.dir.allowlist via unprefixed Spark config aliases. This issue affects Apache Kyuubi: from 1.6.0 before 1.12.0. Users are recommended to upgrade to version 1.12.0, which fixes the issue.
Why this priority
- High severity
- On your watchlist
A fixed release or distro patch exists.
Publisher (CNA): Apache Software Foundation · Vendor: apache
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
apache kyuubi UPGRADE
Affected: >= 1.6.0 and < 1.12.0
Fixed in: 1.12.0
Safe to downgrade to: a release before 1.6.0
1. Check installed version
apt-cache policy kyuubi || rpm -q kyuubi || kyuubi --version
2. UPGRADE to 1.12.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade kyuubi
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade kyuubi
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 1.6.0 (Debian / Ubuntu)
apt-cache madison kyuubi
sudo apt install kyuubi=<VERSION_BEFORE_1.6.0>
sudo apt-mark hold kyuubi
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list kyuubi
sudo dnf downgrade kyuubi-<VERSION_BEFORE_1.6.0>
sudo dnf versionlock add kyuubi
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
Exact fixes by distribution
Fedora 46 · python-trimesh · FIXED · 5.2.0-1.fc46 · FEDORA-2026-429b4bad4c · source
sudo dnf upgrade --advisory=FEDORA-2026-429b4bad4c
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
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