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CVE-2026-15911VulnerabilityPublished Updated

Red Hat Security Advisory: General availability of the satellite/iop-puptoo-rhel9 container image

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Authoritative record:CVE-2026-15911· High 7.4

Not known to be exploited · CVSS 7.4 High : upgrade Red Hat confluent-kafka to 2.14.3 soon.

Data as of 13 Nov 2026, 15:04 UTC

CVSS 3.1 base score
7.4High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 2.14.3
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 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 confluent-kafka to 2.14.3.

Affected software

ProductAffectedFixed in
confluentconfluent-kafkaAffected
  • <=2.14.2
Fixed in–
PyPIconfluent-kafkapkg:pypi/confluent-kafkaOther threatsAffected
  • <2.14.3
Fixed in
  • 2.14.3

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

AI-suggested

The recommended resolution is to update to confluent-kafka Python package version 2.15.0 or later, which enables TLS certificate verification by default and supports CA bundle configuration. Red Hat product teams are working on incorporating the fixed version into affected products such as Red Hat Satellite and Red Hat Insights. Users should apply these updates once available.

Description

CVE-2026-15911 is a security vulnerability in the confluent-kafka Python client's integration with HashiCorp Vault Key Management Service (KMS). The flaw disables TLS certificate verification by default, allowing a remote attacker with network interception capabilities to impersonate the Vault server and intercept or manipulate sensitive data. This affects Red Hat Satellite and Red Hat Insights components that bundle the vulnerable confluent-kafka package.

References

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