CVE & CISA-KEV Catalog

CVE-2026-1180

MEDIUM
5.8
CVSS v3
NVD

Description

A flaw was identified in Keycloak’s OpenID Connect Dynamic Client Registration feature when clients authenticate using private_key_jwt. The issue allows a client to specify an arbitrary jwks_uri, which Keycloak then retrieves without validating the destination. This enables attackers to coerce the Keycloak server into making HTTP requests to internal or restricted network resources. As a result, attackers can probe internal services and cloud metadata endpoints, creating an information disclosure and reconnaissance risk.

CWE-918Server-Side Request Forgery (SSRF)

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 RequiredNone
User InteractionNone
ScopeChanged

Impact

ConfidentialityLow
IntegrityNone
AvailabilityNone

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

Exploit Intelligence

0.36%probability of exploitation in 30 days
28thpercentile

Low risk: more likely to be exploited than 28% of all known CVEs.

References

Related Vulnerabilities

Other CWE-918 (Server-Side Request Forgery (SSRF)) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2024-21893High8.2100%KEV + Ransom-
CVE-2021-40438Critical9.0100%KEVFix
CVE-2021-34473Critical9.1100%KEV + RansomFix
CVE-2021-26855Critical9.1100%KEV + RansomFix
CVE-2021-21985Critical9.8100%KEV + RansomFix
CVE-2022-41040High8.8100%KEV + RansomFix
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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 2026-04-02.