5.3
MediumCVSS 3.1 · from NLnet Labs
CVE-2026-72757
Routinator HTTP server becomes unavailable with many unclosed connections
Routinator · CWE-755 · CWE-755AffectedRoutinator
FixUpdate to 0.15.3 or newer
PublishedOct 26, 17:07 · NLnet Labs
ScoredOct 26 · 5.3 · NLnet Labs
Exploit code publicNone known · checked 21:18 UTC
ExploitedNone known · CISA KEV checked 22:07 UTC
What we know
No known exploitation. CISA KEV, checked 22:07 UTC.
No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 21:18 UTC.
An attacker only needs network access to the target. No login needed. CVSS: network, no privileges.
Description
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.
From NLnet Labs
Affected and fixed versions
ProductAffectedFixed inRoutinatorNot affected0.15.3
Exploit code
Exploit-DBnone knownMetasploitnone knownNucleinone known