CVE-2026-49234: When sending a specifically crafted non-UTF-8 string as select-asn query parameter to the /api/v1/origins endp

Q: How do I fix CVE-2026-49234?

routinator: upgrade to 0.15.2. Exact commands for each OS are on this page.

Q: Is CVE-2026-49234 being exploited?

CVE-2026-49234 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-49234 affect?

CVE-2026-49234 affects routinator. Severity is high (CVSS 7.5). 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.

Q: How urgent is CVE-2026-49234?

Priority 36/100. High severity; Remotely exploitable, no login, no user action

Routine

HIGH 7.5REMOTEUPGRADE

CVE-2026-49234 is a high-severity flaw (CVSS 7.5) affecting routinator. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 82%)
CISA exploited list	No
Weakness	CWE-20
Published	2026-06-08
Last modified	2026-07-23

Publisher (CNA): NLnet Labs · Vendor: nlnetlabs

Last updated 2026-07-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-08 15:16 UTCPublished CVE record published
2026-07-23 07:10 UTCUpdated Record last modified

nlnetlabs routinator UPGRADE

Affected: < 0.15.2

Fixed in: 0.15.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy routinator || rpm -q routinator || routinator --version

2. UPGRADE to 0.15.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade routinator

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade routinator

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-49234?

routinator: upgrade to 0.15.2. Exact commands for each OS are on this page.

Is CVE-2026-49234 being exploited?

CVE-2026-49234 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-49234 affect?

CVE-2026-49234 affects routinator. Severity is high (CVSS 7.5). 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.

How urgent is CVE-2026-49234?

Priority 36/100. High severity; Remotely exploitable, no login, no user action

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CVE-2026-49235 HIGH 7.5 UPGRADE When Routinator encounters a file via RRDP using a specifically crafted Document Type Definition, Routinator c

References

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