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                            CERT-Renater

                Note d'Information No. 2025/VULN491
_____________________________________________________________________

DATE                : 01/08/2025

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems running keycloak-services (Maven) versions
                           prior to 26.0.13, 26.2.6, 26.3.0.

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https://github.com/keycloak/keycloak/security/advisories/GHSA-xhpr-465j-7p9q
https://github.com/keycloak/keycloak/security/advisories/GHSA-27gp-8389-hm4w
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Keycloak phishing attack via email verification step in first login
flow
Moderate severity GitHub Reviewed Published Jul 29, 2025 in
keycloak/keycloak • Updated Jul 30, 2025

Vulnerability details

Package
org.keycloak:keycloak-services (Maven)

Affected versions
< 26.0.13
>= 26.2.0, < 26.2.6

Patched versions
26.0.13
26.2.6


Description

There is a flaw with the first login flow where, during a IdP login,
an attacker with a registered account can initiate the process to merge
accounts with an existing victim's account. The attacker will
subsequently be prompted to "review profile" information, which allows
the the attacker to modify their email address to that of a victim's
account. This triggers a verification email sent to the victim's email
address. If the victim clicks the verification link, the attacker can
gain access to the victim's account. While not a zero-interaction attack,
the attacker's email address is not directly present in the verification
email content, making it a potential phishing opportunity.

This issue has been fixed in versions 26.0.13, 26.2.6, and 26.3.0.


References

    GHSA-xhpr-465j-7p9q
    https://nvd.nist.gov/vuln/detail/CVE-2025-7365
    keycloak/keycloak#40446
    keycloak/keycloak#40520
    https://access.redhat.com/errata/RHSA-2025:11986
    https://access.redhat.com/errata/RHSA-2025:11987
    https://access.redhat.com/errata/RHSA-2025:12015
    https://access.redhat.com/errata/RHSA-2025:12016
    https://access.redhat.com/security/cve/CVE-2025-7365
    https://bugzilla.redhat.com/show_bug.cgi?id=2378852
    https://github.com/keycloak/keycloak/releases/tag/26.0.13
    https://github.com/keycloak/keycloak/releases/tag/26.2.6
    https://github.com/keycloak/keycloak/releases/tag/26.3.0


Severity
Moderate
5.4/ 10

CVSS v3 base metrics
Attack vector
Network
Attack complexity
High
Privileges required
Low
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
None
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:N

EPSS score
0.018 (3rd percentile)

Weaknesses
Weakness CWE-346

CVE ID
CVE-2025-7365

GHSA ID
GHSA-xhpr-465j-7p9q

Source code
keycloak/keycloak

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Privilege Escalation in Keycloak Admin Console (FGAPv2 Enabled)
Moderate
rmartinc published GHSA-27gp-8389-hm4w Jul 29, 2025

Package
org.keycloak:keycloak-services (Maven)

Affected versions
>26.2.0, <26.2.6

Patched versions
26.2.6, 26.3.0

Description

A Privilege Escalation vulnerability was identified in the Keycloak
identity and access management solution, specifically when FGAPv2 is
enabled in version 26.2.x. The flaw lies in the admin permission
enforcement logic, where a user with manage-users privileges can
self-assign realm-admin rights. The escalation occurs due to missing
privilege boundary checks in role mapping operations via the admin
REST interface. A malicious administrator with limited permissions
can exploit this by editing their own user roles, gaining unauthorized
full access to realm configuration and user data.


Severity
Moderate

CVE ID
CVE-2025-7784

Weaknesses
Weakness CWE-269


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