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PatchSiren cyber security CVE debrief

CVE-2026-50236 Red Hat CVE debrief

An authenticated SSRF flaw was found in the OpenShift Console Dev Console webhook helpers. User-supplied target URLs are fetched server-side without validation, with path neutralization enabling arbitrary endpoint targeting and full response reflection from the console pod's privileged network position. This vulnerability may impact OpenShift Console administrators and users with access to webhook helpers. The issue arises from the lack of validation on user-supplied target URLs, which can lead to unauthorized access and data exposure. Affected parties should review the official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Vendor
Red Hat
Product
Red Hat OpenShift Container Platform 4.18
CVSS
HIGH 7.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-11
Original CVE updated
2026-09-21
Advisory published
2026-08-11
Advisory updated
2026-09-21

Who should care

OpenShift Console administrators and users with access to webhook helpers may be impacted by this vulnerability. They should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. Affected parties should plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.

Technical summary

The OpenShift Console Dev Console webhook helpers are vulnerable to an authenticated SSRF attack. User-supplied target URLs are fetched server-side without validation, allowing for arbitrary endpoint targeting and full response reflection from the console pod's privileged network position. This vulnerability may impact OpenShift Console administrators and users with access to webhook helpers. The vulnerability is caused by the absence of input validation on target URLs, which enables attackers to target arbitrary endpoints. To mitigate this vulnerability, it is essential to implement input validation for target URLs and restrict webhook helper access to trusted users.

Defensive priority

Authenticated SSRF vulnerability in OpenShift Console Dev Console webhook helpers allows for arbitrary endpoint targeting and response reflection.

Recommended defensive actions

  • Inventory OpenShift Console installations for exposure.
  • Restrict webhook helper access to trusted users.
  • Implement input validation for target URLs.
  • Monitor for suspicious network activity.
  • Apply vendor remediation when available.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

Evidence from Red Hat suggests an authenticated SSRF flaw in OpenShift Console Dev Console webhook helpers. User-supplied target URLs are fetched server-side without validation. Limited evidence suggests potential impact on OpenShift Console administrators and users with access to webhook helpers. Further verification is needed to confirm affected scope and severity.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-50236 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-50236

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-50236 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-50236

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.