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CVE-2026-111943VulnerabilityPublished Updated

Red Hat Security Advisory: ignition security update

Affects Red Hat ignitionSource 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, 08:14 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

Red Hat has released updated ignition packages for Red Hat Enterprise Linux 10.0 Extended Update Support and related variants. Users should apply the official security update as described in Red Hat advisory RHSA-2026:90513 and the referenced article https://access.redhat.com/articles/11258 to remediate this vulnerability.

Description

Ignition is a utility used during system initialization to configure disks, files, and users based on a configuration source. A security vulnerability (CVE-2026-111943) in the golang crypto/x509 package used by Ignition allows man-in-the-middle attacks via untrusted intermediate certificates. This vulnerability affects Red Hat Enterprise Linux 10.0 Extended Update Support and related variants. Red Hat has released an important security update to address this issue.

References

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