CVE-2026-49234: Routinator crashes on specifically crafted ASN strings in the API
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 Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Routinatorto a version that resolves this vulnerability.Fixed in 0.15.2 - Compensating control
Restrict access to the Routinator API (e.g., /api/v1/origins) to trusted networks only — block or firewall off API access from untrusted networks until you can upgrade to 0.15.2 or later.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-49234?
CVE-2026-49234 has a severity rating of high, with a CVSS score of 8.2.
What issue does CVE-2026-49234 describe?
CVE-2026-49234 describes a vulnerability where Routinator crashes when receiving specially crafted non-UTF-8 strings in ASN queries.
How do I fix CVE-2026-49234?
To fix CVE-2026-49234, upgrade Routinator to version 0.15.2 or any later version.
Who is affected by CVE-2026-49234?
Users who allow API access from untrusted networks are affected by CVE-2026-49234.
What component of Routinator is impacted by CVE-2026-49234?
The /api/v1/origins endpoint of Routinator is impacted by CVE-2026-49234.