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CVE-2026-111943VulnerabilityPublished Updated

Red Hat Security Advisory: OpenShift Container Platform 4.22.20 packages and security update

Affects Red HatSource GCVE Database

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Authoritative record:CVE-2026-111943· Medium

Not known to be exploited : upgrade Red Hat x509 to 1.27.3 or 1.26.10 when convenient.

Data as of 29 Oct 2026, 08:25 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS
0.2% chance of exploitation in 30 days – higher than 22% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.27.3, 1.26.10

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 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 29 Oct 2026.

What to do

Upgrade crypto/x509 to 1.27.3 or 1.26.10.

Affected software

ProductAffectedFixed in
Go standard librarycrypto/x509Affected
  • >=1.27.0-0 <1.27.3
Fixed in
  • 1.27.3
Go standard librarycrypto/x509Affected
  • <1.26.10
Fixed in
  • 1.26.10
Gocrypto/x509pkg:golang/crypto/x509Other threatsAffected
  • <1.26.10
  • >=1.27.0-0 <1.27.3
Fixed in
  • 1.26.10
  • 1.27.3

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

AI-suggested

A fix is available in Red Hat OpenShift Container Platform 4.22.20 packages and container images. Upgrades can be performed using the OpenShift CLI (oc) or the web console. Detailed upgrade instructions are provided in the official Red Hat documentation. There are no indications that additional mitigations are required beyond applying the update.

Description

Red Hat OpenShift Container Platform 4.22.20 includes a security update addressing a vulnerability in the golang crypto/x509 package that could allow man-in-the-middle attacks via untrusted intermediate certificates (CVE-2026-111943). This update is important for users of OpenShift Container Platform 4.22 and is available as RPM packages and container images. Users are advised to upgrade to the updated packages and images through the appropriate release channels using the OpenShift CLI or web console.

References

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