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CVE-2026-71029: Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server)

35
Routine
MEDIUM 6.8REMOTEUPGRADE

CVE-2026-71029 is a medium-severity flaw (CVSS 6.8) affecting helidon. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 3.0.0-3.2.17. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. While the vulnerability is in Helidon, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthor

Why this priority

  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score6.8 (Medium)
Attack vectorNetwork (remote)
Attack complexityHigh
Privileges neededNone
User interactionNone
EPSS exploit chance0.3% (top 75%)
CISA exploited listNo
WeaknessCWE-284
Published2026-08-18
Last modified2026-10-22
Publisher (CNA): Oracle · Vendor: oracle

Last updated 2026-10-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

oracle helidon UPGRADE
Affected: >= 3.0.0 and <= 3.2.17
Fixed in: newer than 3.2.17
Safe to downgrade to: a release before 3.0.0
1. Check installed version
apt-cache policy helidon || rpm -q helidon || helidon --version
2. UPGRADE to newer than 3.2.17 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade helidon
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade helidon
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 3.0.0 (Debian / Ubuntu)
apt-cache madison helidon sudo apt install helidon=<VERSION_BEFORE_3.0.0> sudo apt-mark hold helidon
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list helidon sudo dnf downgrade helidon-<VERSION_BEFORE_3.0.0> sudo dnf versionlock add helidon
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 · wasmedge · FIXED · 0.18.1-1.fc46 · FEDORA-2026-4c27216e39 · source
sudo dnf upgrade --advisory=FEDORA-2026-4c27216e39
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.

Quick answers

How do I fix CVE-2026-71029?

helidon: upgrade to newer than 3.2.17. Exact commands for each OS are on this page.

Is CVE-2026-71029 being exploited?

CVE-2026-71029 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-71029 affect?

CVE-2026-71029 affects helidon. Severity is medium (CVSS 6.8). Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 3.0.0-3.2.17. Difficult to exploit vulnerability allows unauthenticated attacker with network acc

How urgent is CVE-2026-71029?

Priority 35/100. Remotely exploitable, no login, no user action

Related CVEs

References

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