CVE-2025-10044Keycloak: keycloak error_description injection on error pages
Updated under an hour ago ()
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It affects keycloak and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 4.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Deferred
- Record last updated
- Dec 19, 2025
- First seen by InfoSec Signals
- Oct 18, 2026
Affected products
Keycloak keycloak keycloak:keycloak (from the name) | before 26.2.9 | CNA record |
Red Hat Red Hat build of Keycloak 26.0 redhat:build_keycloak | from 26.0.17-1 not affected | CNA record |
References
- https://access.redhat.com/errata/RHSA-2025:16399vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2025:16400vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2025:19923vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2025:19925vendor-advisory, x-refsource-redhat
- https://access.redhat.com/security/cve/CVE-2025-10044vdb-entry, x-refsource-redhat
- https://bugzilla.redhat.com/show_bug.cgi?id=2393551issue-tracking, x-refsource-redhat
- https://github.com/keycloak/keycloak/pull/42443
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.