CVE-2025-10044
Keycloak’s account console and other pages accept arbitrary text in the error_description query parameter.
Does this matter?
Lower severity and a low EPSS score (0.31%). Track it; it rarely justifies an emergency change on its own.
Description
A flaw was found in Keycloak. Keycloak’s account console and other pages accept arbitrary text in the error_description query parameter. This text is directly rendered in error pages without validation or sanitization. While HTML encoding prevents XSS, an attacker can craft URLs with misleading messages (e.g., fake support phone numbers or URLs), which are displayed within the trusted Keycloak UI. This creates a phishing vector, potentially tricking users into contacting malicious actors.
- CVSS 3.1
- 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
- EPSS
- 0.31% probability · 24th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Source
- secalert@redhat.com
References
- https://access.redhat.com/errata/RHSA-2025:16399
- https://access.redhat.com/errata/RHSA-2025:16400
- https://access.redhat.com/errata/RHSA-2025:19923
- https://access.redhat.com/errata/RHSA-2025:19925
- https://access.redhat.com/security/cve/CVE-2025-10044
- https://bugzilla.redhat.com/show_bug.cgi?id=2393551
- https://github.com/keycloak/keycloak/pull/42443
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.