CVE-2026-63142: Incomplete List of Disallowed Inputs (CWE-184) in Kibana can allow an authenticated attacker with access to th

Routine

MEDIUM 5.0UPGRADE

CVE-2026-63142 is a medium-severity flaw (CVSS 5.0) affecting kibana. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Incomplete List of Disallowed Inputs (CWE-184) in Kibana can allow an authenticated attacker with access to the Reporting feature to bypass outbound request restrictions configured by an administrator, causing the reporting service to send requests to network destinations that should be denied by the configured security policy.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.0 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 80%)
CISA exploited list	No
Weakness	CWE-863
Published	2026-07-21
Last modified	2026-10-24

Publisher (CNA): Elastic · Vendor: elastic

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-21 23:18 UTCPublished CVE record published
2026-10-24 17:10 UTCUpdated Record last modified

elastic kibana UPGRADE

Affected: >= 8.0.0 and < 8.19.19 · >= 9.0.0 and < 9.3.8 · >= 9.4.0 and < 9.4.4

Fixed in: 8.19.19, 9.3.8, 9.4.4

Safe to downgrade to: a release before 8.0.0

1. Check installed version

apt-cache policy kibana || rpm -q kibana || kibana --version

2. UPGRADE to 8.19.19 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade kibana

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade kibana

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 8.0.0 (Debian / Ubuntu)

apt-cache madison kibana sudo apt install kibana=<VERSION_BEFORE_8.0.0> sudo apt-mark hold kibana

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list kibana sudo dnf downgrade kibana-<VERSION_BEFORE_8.0.0> sudo dnf versionlock add kibana

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.

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-2026-63142?

kibana: upgrade to 8.19.19, 9.3.8, 9.4.4. Exact commands for each OS are on this page.

Is CVE-2026-63142 being exploited?

CVE-2026-63142 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-2026-63142 affect?

CVE-2026-63142 affects kibana. Severity is medium (CVSS 5.0). Incomplete List of Disallowed Inputs (CWE-184) in Kibana can allow an authenticated attacker with access to the Reporting feature to bypass outbound request restrictions configured by an administrator, causing the reporting service to send

How urgent is CVE-2026-63142?

Priority 23/100. No elevated risk signals yet.

Software pages

Kibana vulnerabilities

Related CVEs

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CVE-2026-42397 MEDIUM 6.5 UPGRADE Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to a denial of service via E
CVE-2026-56147 HIGH 7.1 UPGRADE Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to unauthorized information disc
CVE-2026-56146 MEDIUM 5.4 UPGRADE Improper Access Control (CWE-284) in Kibana can lead to unauthorized modification of Entity Analytics Watchlis
CVE-2026-49092 MEDIUM 4.3 UPGRADE Unintended Proxy or Intermediary ('Confused Deputy') (CWE-441) in Kibana can lead to unauthorized information

References

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