CLEANSTART-2026-PF75663: CBOR parser in FasterXML jackson-dataformats-binary never invokes StreamReadConstraints
Published Nov 13, 2026
·Updated
Security vulnerability affects the keycloak package. The CBOR parser in FasterXML jackson-dataformats-binary never invokes StreamReadConstraints.
Affected Software
1 affected componentFixes available
cleanstart/keycloak<26.8.2-r0
26.8.2-r0
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
cleanstart/keycloakto a version that resolves this vulnerability.Fixed in 26.8.2-r0
Event History
Nov 13, 2026
Advisory Published
via OSV·12:37 AM
Data Sourced
via OSV·12:37 AM
DescriptionSeverityAffected Software
Frequently Asked Questions
1
Which deployments should be assessed first?
Assess deployments of the cleanstart/keycloak package. The available data does not identify affected versions or configuration-specific exposure.
2
Does exploitation require an authenticated user or user interaction?
No. The CVSS vector indicates network-based exploitation with low attack complexity, no privileges required, and no user interaction.
3
What is the expected security impact?
The reported impact is high availability impact, with no reported confidentiality or integrity impact.