CVE-2026-19078

Ose-oauth-server: oauth-server: open redirect vulnerability enables phishing via unvalidated parameter.

Published Aug 11, 2026 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

Vendor Workaround

There is no mitigation for this flaw. However, the risk is limited as the vulnerability only enables phishing — no OAuth tokens, authorization codes, or session credentials are exposed through the redirect.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Redhat openshift Container Platform
Vendors & Products Redhat openshift Container Platform
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Ose-oauth-server: oauth-server: open redirect vulnerability enables phishing via unvalidated parameter.
First Time appeared Redhat
Redhat openshift
Weaknesses CWE-601
CPEs cpe:/a:redhat:openshift:4
Vendors & Products Redhat
Redhat openshift
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Aug 11, 2026, 3:56 PM
Reserved
Aug 6, 2026, 10:51 AM
Status
Awaiting Analysis
Published
Aug 11, 2026, 4:17 PM
Modified
Oct 23, 2026, 7:10 PM
Severity
Low
Public date
Aug 6, 2026, 12:00 AM