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Vulnerabilities

Threat intelligence · CVE-2025-10044

A flaw was found in Keycloak.

Published Sep 5, 2025 · catalog updated Dec 19, 2025 · Red Hat Red Hat build of Keycloak 26.2

Last checked Oct 28, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-10044. EPSS is 0.31%. Act only if a listed version of Red Hat Red Hat build of Keycloak 26.2 is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium4.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.31%
Remediation
Advisory link
Affected products
vendor Red Hat Red Hat build of Keycloak 26.2 patch: 26.2-9

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Red Hat Red Hat build of Keycloak 26.2 patch: 26.2-9patch: 26.2-9

How to fix CVE-2025-10044

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-10044. EPSS is 0.31%. Act only if a listed version of Red Hat Red Hat build of Keycloak 26.2 is installed.

Which versions are affected?

Compare what you have installed with Red Hat Red Hat build of Keycloak 26.2 patch: 26.2-9 patch: 26.2-9. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.31%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 5, 2025 · EUVD

    Detected

    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.

  2. Dec 19, 2025 · EUVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2025-10044

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-10044

    30-day exploitation probability 0.31%

    first.org
  • EUVDVulnerability recordEUVD-2025-27029

    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

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 28, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 28, 2026
  • CVE.orgOct 22, 2026
  • EUVDOct 22, 2026