CVE-2026-1784: Red Hat OpenShift Container Platform 4.12 · External Control of System or Configuration Setting
Affects Red Hat OpenShift Container Platform 4.12Source CVE Database V5
Not known to be exploited · CVSS 8.8 High.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 2 Jun 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 30 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red HatRed Hat OpenShift Container Platform 4.12 | Affected– | Fixed in– |
| Red HatRed Hat OpenShift Container Platform 4.13 | Affected– | Fixed in– |
| Red HatRed Hat OpenShift Container Platform 4.14 | Affected– | Fixed in– |
| Red HatRed Hat OpenShift Container Platform 4.15 | Affected– | Fixed in– |
| Red HatRed Hat OpenShift Container Platform 4.16 | Affected– | Fixed in– |
| Red HatRed Hat OpenShift Container Platform 4.18 | Affected– | Fixed in– |
AI-suggested
Red Hat has released fixed container images and packages in OpenShift Container Platform versions 4.19.33 and 4.21.19 that address CVE-2026-1784. Users should upgrade their OpenShift clusters to these versions as soon as possible following the official Red Hat upgrade documentation. The vendor manages remediation for these on-premise/private cloud deployments, and no additional mitigation steps are indicated beyond applying the official updates.
Description
The Route OpenShift resource allows to define routes to make pods reachable at a subdomain through HAProxy. It was found that the checks performed on the spec.path YAML stanza in a Route document was insufficient and could allow a controlled injection of the HAProxy configuration.
References
- access.redhat.com/errata/RHSA-2026:23241 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:23246 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:25045 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:25182 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:25194 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:26543 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:28893 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:28964 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-1784 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2436075 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1784.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:70647 (opens in a new tab)