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VulnerabilityPublished

CVE-2026-84716: CWE-266

Source GCVE Database

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Authoritative record:CVE-2026-84716· Medium 6.6

Not known to be exploited · CVSS 6.6 Medium : update Red Hat Ansible Automation Platform 2.5 for RHEL 8 when convenient.

Data as of 8 Nov 2026, 23:24 UTC

CVSS 3.1 base score
6.6Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.16.6
EPSS
0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 Sep 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 8 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Ansible Automation Platform 2.5 for RHEL 8automation-controllerAffected–Fixed in–
Red Hat Ansible Automation Platform 2.5 for RHEL 9automation-controllerAffected–Fixed in–
Red Hat Ansible Automation Platform 2.6 for RHEL 9automation-controllerAffected–Fixed in–
Red Hat Ansible Automation Platform 2.6ansible-automation-platform-26/controller-rhel9Affected–Fixed in–
Red Hat Ansible Automation Platform 2.7ansible-automation-platform-27/controller-rhel9Affected–Fixed in–

AI-suggested

A security update is available from Red Hat as part of the Red Hat Ansible Automation Platform 2.6 update (RHSA-2026:71113) that addresses this vulnerability. Users should apply the official patch provided by Red Hat to remediate this issue. No additional mitigation steps are required beyond applying the vendor's fix.

Description

A vulnerability in the automation-controller instance install-bundle endpoint allows a system administrator to obtain a long-lived, non-revocable mesh-CA-signed certificate for a case-variant hostname. This certificate can be accepted by TLS peers that match hostnames case-insensitively, enabling potential TLS impersonation or interception in managed/hosted deployments. The flaw arises from inconsistent case sensitivity in hostname validation and the lack of issuance logs or revocation mechanisms. It does not allow direct remote code execution.

References

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