CVE-2026-72757: medium-severity vulnerability in NLnet Labs Routinator
Routinator HTTP server becomes unavailable with many unclosed connections
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.4%
Routinator runs out of open connections on the HTTP server when many connections are opened but never closed, leaving the HTTP server unavailable. This condition can be triggered maliciously by an attacker by opening a large number of connections to the HTTP server.
This only affects users that make their HTTP or RTR server available to untrusted networks.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected products
NLnet Labs · RoutinatorRelated CVEs — NLnet Labs Routinator
In the same product, most dangerous first.
CVE-2021-43173—Hanging RRDP requestEPSS 1.4%CVE-2021-43174—gzip transfer encoding caused out-of-memory crashEPSS 1.1%CVE-2021-43172—Infinite length chain of RRDP repositoriesEPSS 1.1%CVE-2024-1622HIGHRoutinator terminates when RTR connection is reset too quickly after openingEPSS 1.0%CVE-2021-41531—Invalid RPKI data could disable Route Origin Validation on RTR clients.EPSS 0.9%CVE-2022-3029—Fatal error on incorrect base64 data in RRDPEPSS 0.8%