Routinator crashes on specifically crafted ASN strings in the API
CVE-2026-49234

8.2HIGH

Key Information:

Vendor

Nlnet Labs

Status
Routinator
Vendor
CVE Published:
8 June 2026

What is CVE-2026-49234?

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.

Affected Version(s)

Routinator 0.15.2

References

https://www.nlnetlabs.nl/downloads/routinator/CVE-2026-49...
vendor-advisory

CVSS V4

Score:
8.2
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

X41 D-Sec GmbH
.