How severe is CVE-2023-4918?

CVE-2023-4918 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-4918 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4918?

CVE-2023-4918 affects Redhat Keycloak. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-4918?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-4918 published?

CVE-2023-4918 was published on 2023-09-12 and last updated on 2026-06-17.

CVE-2023-4918

CVE-2023-4918 is a high-severity vulnerability in Redhat Keycloak with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-319.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-319
Affected product: Redhat Keycloak
Published: 2023-09-12
Last modified: 2026-06-17

Description

A flaw was found in the Keycloak package, more specifically org.keycloak.userprofile. When a user registers itself through registration flow, the "password" and "password-confirm" field from the form will occur as regular user attributes. All users and clients with proper rights and roles are able to read users attributes, allowing a malicious user with minimal access to retrieve the users passwords in clear text, jeopardizing their environment.

Frequently asked questions

What is CVE-2023-4918?: A flaw was found in the Keycloak package, more specifically org.keycloak.userprofile. When a user registers itself through registration flow, the "password" and "password-confirm" field from the form will occur as regular user attributes. All users and clients with proper rights and roles are able to read users attributes, allowing a malicious user with minimal access to retrieve the users passwords in clear text, jeopardizing their environment.
How severe is CVE-2023-4918?: CVE-2023-4918 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-4918 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4918?: CVE-2023-4918 affects Redhat Keycloak. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-4918?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-4918 published?: CVE-2023-4918 was published on 2023-09-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:redhat:keycloak:22.0.2:*:*:*:*:*:*:*

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