EUVD-2026-56228
GHSA-mx5m-xr46-c5gf
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Network-delivered open redirect requires victim interaction (UI:R) but no attacker authentication (PR:N); impact is integrity-only via redirect, with no confidentiality or availability consequence.
Primary rating from Vendor (redhat).
CVSS VectorNVD
Lifecycle Timeline
2DescriptionNVD
A flaw was found in the oauth-server component. This open redirect vulnerability occurs when the 'then' parameter in the grant approval handler is not properly validated. A remote attacker can craft a malicious URL that, when approved or denied by an authenticated user, redirects them to an attacker-controlled website. This could enable phishing attacks, potentially tricking users into revealing sensitive information.
AnalysisAI
Open redirect in the oauth-server component of Red Hat OpenShift Container Platform 4 allows a remote attacker to craft a malicious OAuth grant URL that, upon interaction by an authenticated user, silently redirects that user to an attacker-controlled site. The root cause is the absence of server-side validation on the 'then' parameter in the grant approval handler (CWE-601), making every OpenShift OAuth endpoint a potential phishing launcher. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the victim is an authenticated OpenShift user who clicks a crafted OAuth grant URL and completes the approve-or-deny interaction on the grant page - this is the UI:R requirement. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N scores this as Medium (4.3), accurately capturing that the attacker needs no authentication (PR:N) and faces no special conditions (AC:L), but cannot succeed without victim interaction (UI:R). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Administrators should consult the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-19078 for the applicable errata, as no specific patched version number is confirmed in the available input data; check the Bugzilla entry at https://bugzilla.redhat.com/show_bug.cgi?id=2511975 for patch status updates. … Detailed patch versions, workarounds, and compensating controls in full report. |
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