Answer in brief
CVE-2026-19078 records a Medium severity (CVSS 4.3) vulnerability in Ose-oauth-server: oauth-server: open redirect vulnerability enables phishing via unvalidated parameter.. The current sources do not mark it as known exploited. The current feed maps Red Hat/openshift4/ose-oauth-server-rhel8 (generic), Red Hat/openshift4/ose-oauth-server-rhel9 (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 4.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Red Hat/openshift4/ose-oauth-server-rhel8 (generic), Red Hat/openshift4/ose-oauth-server-rhel9 (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Red Hat/openshift4/ose-oauth-server-rhel8generic | * | Not reported |
| Red Hat/openshift4/ose-oauth-server-rhel9generic | * | Not reported |
Published upstream
Aug 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 11, 2026
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.
Quoted source text, attributed separately from HOL analysis.