CVE-2026-49234 PUBLISHED

Routinator crashes on specifically crafted ASN strings in the API

Assigner: NLnet Labs
Reserved: 28.05.2026 Published: 08.06.2026 Updated: 08.06.2026

When sending a specifically crafted non-UTF-8 string as select-asn query parameter to the /api/v1/origins endpoint, Routinator crashes.

This only affects users who allow API access from untrusted networks.

CVSS Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
CVSS Score: 8.2

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Local	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	High	Availability	High
Privileges Required	None
User Interaction	None

CVSS 4.0

Vendor	NLnet Labs
Product	Routinator
Versions	Default: affected unaffected from 0.15.2 to * (excl.)

This issue is fixed in 0.15.2 and all later versions.