CVE-2026-9689
MediumCVSS 4.2Exploitation Probability (EPSS)
Low risk25th percentile - higher than 25% of all known CVEs
Summary
W Keycloak, rozwiązaniu do zarządzania tożsamością i dostępem, znaleziono lukę. Gdy aplikacja kliencka jest skonfigurowana do akceptacji szerokich identyfikatorów URI, zdalny atakujący może manipulować procesem uwierzytelniania, tworząc specjalny adres internetowy.
Risk Assessment
Luka ta, znana jako zanieczyszczenie parametrów HTTP, może pozwolić atakującemu na obejście zabezpieczeń lub uzyskanie nieautoryzowanego dostępu do zasobów, co stwarza poważne zagrożenie dla organizacji.
Recommendation
Zaleca się ograniczenie akceptowanych identyfikatorów URI w aplikacjach klienckich oraz wdrożenie dodatkowych mechanizmów weryfikacji danych, aby zminimalizować ryzyko związane z tą podatnością.
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Original NVD description (English source)
A flaw was found in Keycloak, an open-source identity and access management solution. When a client application is configured to accept broad redirect Uniform Resource Identifiers (URIs), a remote attacker can manipulate the authentication process by crafting a special web address. If a user clicks this link, the client application might incorrectly prioritize attacker-controlled information over legitimate data. This vulnerability, known as HTTP parameter pollution, could allow an attacker to bypass security measures or gain unauthorized access to resources.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

