CVE & CISA-KEV Catalog

CVE-2026-3911

LOW
2.7
CVSS v3
NVD

Description

A flaw was found in Keycloak. An authenticated user with the view-users role could exploit a vulnerability in the UserResource component. By accessing a specific administrative endpoint, this user could improperly retrieve user attributes that were configured to be hidden. This unauthorized information disclosure could expose sensitive user data.

How to fix

Remediation Available
rhbk/keycloakRed Hat / RHEL
Fixed in:rhel9@sha256:a4cb583985eb220ad05b1983a98a5a50e2b76c15e6f56152045591e3994f37d1_ppc64leRHSA-2026:6478
Fixed in:rhel9-operator@sha256:715a5c6cc9061fc0305370a33f5b69a96ba7bfdb23b706a567b489fc05b05e06_ppc64leRHSA-2026:6478
Fixed in:rhel9@sha256:dc54248ad9357fbd737e6983e6d8d0c7e845e39ed6558bd7c39f7a7573459489_amd64RHSA-2026:6478
Fixed in:operator-bundle@sha256:7fb041b0e2b43954c3a83b58fd885b1cdc5bb32275e06c4c72955da5b78255c3_amd64RHSA-2026:6478
Fixed in:rhel9-operator@sha256:1a7ac3c798d83cc37dd750ed44223630f4ebff937534a59a9e9ad029dbf31a0f_amd64RHSA-2026:6478
Fixed in:rhel9@sha256:c1c1cb36f70ca142a789b359f9a120d321f58adc44e2c97a49c2d6f270d15bd9_arm64RHSA-2026:6478
Fixed in:rhel9-operator@sha256:c68d195c2d19568d9789648ef347a3388da453c83120d696453333c34a564347_arm64RHSA-2026:6478
Fixed in:rhel9@sha256:33fc8c6edb3c5c2df302ea53a89454320e08ff4660ba84d0a78f6c67178dfb16_s390xRHSA-2026:6478
Fixed in:rhel9-operator@sha256:0d90a1c28652b5f73ea90f78968548178cf710121fcb13774a467aeb9c30ab09_s390xRHSA-2026:6478
rhbk/keycloakRocky
Fixed in:rhel9@sha256:a4cb583985eb220ad05b1983a98a5a50e2b76c15e6f56152045591e3994f37d1_ppc64leRHSA-2026:6478
Fixed in:rhel9-operator@sha256:715a5c6cc9061fc0305370a33f5b69a96ba7bfdb23b706a567b489fc05b05e06_ppc64leRHSA-2026:6478
Fixed in:rhel9@sha256:dc54248ad9357fbd737e6983e6d8d0c7e845e39ed6558bd7c39f7a7573459489_amd64RHSA-2026:6478
Fixed in:operator-bundle@sha256:7fb041b0e2b43954c3a83b58fd885b1cdc5bb32275e06c4c72955da5b78255c3_amd64RHSA-2026:6478
Fixed in:rhel9-operator@sha256:1a7ac3c798d83cc37dd750ed44223630f4ebff937534a59a9e9ad029dbf31a0f_amd64RHSA-2026:6478
Fixed in:rhel9@sha256:c1c1cb36f70ca142a789b359f9a120d321f58adc44e2c97a49c2d6f270d15bd9_arm64RHSA-2026:6478
Fixed in:rhel9-operator@sha256:c68d195c2d19568d9789648ef347a3388da453c83120d696453333c34a564347_arm64RHSA-2026:6478
Fixed in:rhel9@sha256:33fc8c6edb3c5c2df302ea53a89454320e08ff4660ba84d0a78f6c67178dfb16_s390xRHSA-2026:6478
Fixed in:rhel9-operator@sha256:0d90a1c28652b5f73ea90f78968548178cf710121fcb13774a467aeb9c30ab09_s390xRHSA-2026:6478

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredHigh
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityLow
IntegrityNone
AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

Exploit Intelligence

0.33%probability of exploitation in 30 days
25thpercentile

Low risk: more likely to be exploited than 25% of all known CVEs.

References

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Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-07.