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01 Record

CVE-2026-2603

Keycloak: keycloak: unauthorized authentication via disabled saml identity provider

HighPUBLISHEDCNA: redhat
CNA base score8.1 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
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02 Description

Keycloak: keycloak: unauthorized authentication via disabled saml identity provider

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.44% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 38.0% of scored records. A rank, not a probability.
NVD base score
8.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
NVD analysis status
Analyzed. NVD last modified this record on 2026-08-18.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-03-18 01:14Z7 MO AGO
Last updated
2026-07-15 01:15Z3 MO AGO
Reserved
2026-02-16
Assigning CNA
redhat
Record state
PUBLISHED
Severity
High (CVSS 8.1)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Weaknesses
  • CWE-306Missing Authentication for Critical FunctionBase
Data version
5.2
Document digest
d66949d033752d81929143d3fb45c07df35cb3005566667d80c122be4856005b

05 Affected products

VendorProductVersionsPlatforms
Red HatRed Hat build of Keycloak 26.2Not specified—
Red HatRed Hat build of Keycloak 26.2.14Not specified—
Red HatRed Hat build of Keycloak 26.4Not specified—
Red HatRed Hat build of Keycloak 26.4.10Not specified—

06 References