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CVE-2026-56851VulnerabilityPublished

Yunikorn k8shim: Nickname profile can panic with an out-of-bounds slice error when transforming crafted input into a

Affects yunikorn-k8shimSource GCVE Database

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Authoritative record:CVE-2026-56851· High 7.5

Not known to be exploited · CVSS 7.5 High : upgrade to 1.9.0-r1 soon.

Data as of 14 Nov 2026, 03:50 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 1.9.0-r1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 Oct 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 13 Nov 2026.

What to do

Upgrade yunikorn-k8shim to 1.9.0-r1.

Affected software

ProductAffectedFixed in
CleanStartyunikorn-k8shimpkg:apk/cleanstart/yunikorn-k8shimOther threatsAffected
  • <1.9.0-r1
Fixed in
  • 1.9.0-r1

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

AI-suggested

Upgrade yunikorn-k8shim to version 1.9.0-r1 or later, where this vulnerability has been fixed. Applying this official patch will prevent the out-of-bounds slice panic and associated denial of service.

Description

A security vulnerability in the yunikorn-k8shim package allows the Nickname profile to panic due to an out-of-bounds slice error when processing crafted input into a short destination buffer. This can cause a denial of service by crashing the affected component. The issue affects versions prior to 1.9.0-r1 and has been assigned CVE-2026-56851 with a high severity rating.

References

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