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CVE-2026-37980

Org.keycloak.forms.login: keycloak: keycloak: arbitrary code execution via stored cross-site scripting (xss) in organization selection login page

Published: Apr 14, 2026Updated: Jun 2, 2026 Sources: CVE List NVDCWE-79
NVD MITRE
6.9CVSSMEDIUM
EPSS Score
0.2%
Top 86.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A flaw was found in Keycloak, specifically in the organization selection login page. A remote attacker with `manage-realm` or `manage-organizations` administrative privileges can exploit a Stored Cross-Site Scripting (XSS) vulnerability. This flaw occurs because the `organization.alias` is placed into an inline JavaScript `onclick` handler, allowing a crafted JavaScript payload to execute in a user's browser when they view the login page. Successful exploitation enables arbitrary JavaScript execution, potentially leading to session theft, unauthorized account actions, or further attacks against users of the affected realm.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:RS:CC:HI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-79

Affected Products

Red Hat Build of KeycloakRed HatWeb & CMS Plugins
build of keycloakredhat
On-prem
Security Products / identity-access-mgmt
red hatcommercialUSOperating Systemsaka red hat
redhatcommercialUSOperating Systemsaka red hat

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://access.redhat.com/security/cve/CVE-2026-37980
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2455325
bugzilla.redhat.com

Timeline

Published
Apr 14, 2026
Last Updated
Jun 2, 2026

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