CVE-2026-19078

Summary

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.

Affected Software

VendorProductVersion RangeStatus

Weaknesses

  • CWE-601: URL Redirection to Untrusted Site ('Open Redirect')

Workarounds

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.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References