Is CVE-2026-4874 actively exploited?

No active exploitation of CVE-2026-4874 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-4874 be exploited remotely?

Yes. CVE-2026-4874 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-4874?

CVE-2026-4874 has a CVSS score of 3.1 (LOW).

HOME VULNERABILITIESCVE-2026-4874

LOW

CVE-2026-4874

CWE-918Published: March 26, 2026· Updated: Apr 1, 2026

3.1

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:6.8th

Official Description

A flaw was found in Keycloak. An authenticated attacker can perform Server-Side Request Forgery (SSRF) by manipulating the `client_session_host` parameter during refresh token requests. This occurs when a Keycloak client is configured to use the `backchannel.logout.url` with the `application.session.host` placeholder. Successful exploitation allows the attacker to make HTTP requests from the Keycloak server’s network context, potentially probing internal networks or internal APIs, leading to information disclosure.

NVD Source

Technical Analysis

CVE-2026-4874 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.