PatchTheCVECVE-2026-23904: Kyuubi Engine UI proxy accepts a host and port from the request path and proxies HTTP requests to that destina
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This month
HIGH 7.3REMOTEWATCHLISTUPGRADE
CVE-2026-23904 is a high-severity flaw (CVSS 7.3) affecting kyuubi. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Kyuubi Engine UI proxy accepts a host and port from the request path and proxies HTTP requests to that destination. A remote requester with network access to the proxy can cause the Kyuubi server to send HTTP requests to arbitrary reachable hosts, resulting in SSRF or open-proxy behavior. This issue affects Apache Kyuubi: from 1.8.0 before 1.12.0. Users are recommended to upgrade to version 1.12.0, which disables the proxy by default. To resto
Why this priority
- High severity
- Remotely exploitable, no login, no user action
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.3 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.9% (top 42%) |
| CISA exploited list | No |
| Weakness | CWE-923 |
| Published | 2026-07-29 |
| Last modified | 2026-10-23 |
Publisher (CNA): Apache Software Foundation · Vendor: apache
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
apache kyuubi UPGRADE
Affected: >= 1.8.0 and < 1.12.0
Fixed in: 1.12.0
Safe to downgrade to: a release before 1.8.0
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 1.8.0 (Debian / Ubuntu)
apt-cache madison kyuubi
sudo apt install kyuubi=<VERSION_BEFORE_1.8.0>
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_1.8.0>
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-openslide · FIXED · 1.4.7-1.fc46 · FEDORA-2026-336bea884e · source
sudo dnf upgrade --advisory=FEDORA-2026-336bea884e
Fedora ELN · valgrind · FIXED · 3.28.0-1.eln159 · FEDORA-2026-c593ef1d15 · source
sudo dnf upgrade --advisory=FEDORA-2026-c593ef1d15
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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