Vulnerability record/PUBLISHED/Published Nov 2, 2026 15:42:13 UTC

CVE-2026-109142

When a CA's parent lives on the same Krill server: instead of building and verifying a signed CMS message, it runs the RFC 6492 provisioning exchange in-process and trusts the child identity (child_handle) that the caller put in the parent contact. Nothing checks that this child identity actually belongs to the CA making the request.

Base score8.4/ 10

SeverityHighCVSS 3.1

Exploitability / impact

CVSS metric breakdown

Vector-derived attributes

Base severityHigh

Attack vectorNetworkAV

Attack complexityHighAC

Privileges requiredLowPR

User interactionNoneUI

ScopeChangedS

Confidentiality impactHighC

Integrity impactHighI

Availability impactLowA

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

CVSS communicates standardized severity and impact characteristics. It does not establish whether a system is exploitable in your specific environment.

Record context

CVE Numbering AuthorityNLnet Labs

Last updatedNov 2, 2026 16:10:56 UTC

PublishedNov 2, 2026 15:42:13 UTC

ReservedOct 12, 2026 11:22:34 UTC

Credits

Anthropic and Ada Logics