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CVE-2026-29063VulnerabilityPublished Updated

Red Hat Security Advisory: multicluster engine for Kubernetes v2.7.10 security update

Affects Red HatSource GCVE Database

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Authoritative record:CVE-2026-29063· High 8.7

Not known to be exploited · CVSS 8.7 High · fixed in Red Hat package updates : patch Red Hat immutable-js soon.

Data as of 5 Nov 2026, 21:06 UTC

CVSS 4.0 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.

Sources agree

CVSS scores by source
CNA (GitHub_M)CVSS 4.08.7
ADP (redhat-SADP)CVSS 3.18.8
Patch
Available – fixed in 5.1.5, 4.3.7, 3.8.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Upgrade immutable-js to 5.1.5, 4.3.7 or 3.8.3.

Affected software

ProductAffectedFixed in
npmimmutable-jspkg:npm/immutable-jsOther threatsAffected
  • <3.8.3
  • <4.3.7
  • <5.1.5
Fixed in
  • 3.8.3
  • 4.3.7
  • 5.1.5

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

The vendor advisory references updated images in the 2.7 General Availability release that include bug fixes and enhancements. Users should follow the official Red Hat documentation to install or update to the latest multicluster engine images as detailed in the advisory.

Description

A security advisory was issued for the multicluster engine for Kubernetes v2.7 images used by Red Hat for centralized management of multiple Kubernetes clusters. The advisory references CVE-2026-29063 and is classified as a high severity vulnerability. The advisory does not provide details on the specific flaw or its impact, nor does it list fixed versions or patches explicitly. The multicluster engine facilitates cluster creation and management via APIs for configuration distribution based on placement policies.

References

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