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01 Record

CVE-2026-118030

Keycloak-services: keycloak-services: hotp race condition allows single otp code reuse across concurrent logins

MediumPUBLISHEDCNA: redhat
CNA base score4.2 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

02 Description

Keycloak-services: keycloak-services: hotp race condition allows single otp code reuse across concurrent logins

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited 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
Not scored by EPSS
EPSS percentile
Not scored by EPSS
NVD base score
4.2 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
NVD analysis status
Awaiting Analysis. NVD last modified this record on 2026-10-29.
Red Hat severity
Moderate. 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
2026-10-29 06:22Z9 HR AGO
Last updated
2026-10-29 14:18Z1 HR AGO
Reserved
2026-10-27
Assigning CNA
redhat
Record state
PUBLISHED
Severity
Medium (CVSS 4.2)
CNA CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Weaknesses
  • CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class
Data version
5.2
Document digest
f5c7f3de40cf1a5e277253e1afae090284f8f315758ac343830cfa49c68384dd

05 Affected products

VendorProductVersionsPlatforms
Red HatRed Hat Build of KeycloakNot specified—
Red HatRed Hat Single Sign-On 7Not specified—

06 References