CVE-2026-84716: CWE-266
Source GCVE Database
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
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 6.6 |
|---|
- 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:NExploitation evidence
Disclosed: evidence found.
CVE published 23 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
Patches and advisories
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Ansible Automation Platform 2.5 for RHEL 8automation-controller | Affected– | Fixed in– |
| Red Hat Ansible Automation Platform 2.5 for RHEL 9automation-controller | Affected– | Fixed in– |
| Red Hat Ansible Automation Platform 2.6 for RHEL 9automation-controller | Affected– | Fixed in– |
| Red Hat Ansible Automation Platform 2.6ansible-automation-platform-26/controller-rhel9 | Affected– | Fixed in– |
| Red Hat Ansible Automation Platform 2.7ansible-automation-platform-27/controller-rhel9 | Affected– | 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
- nvd.nist.gov/vuln/detail/CVE-2026-84716 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:71113 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-84716 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2527199 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:71114 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:71177 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:71179 (opens in a new tab)