๐Ÿ” CVE Alert

CVE-2026-72757

MEDIUM 5.3

Routinator HTTP server becomes unavailable with many unclosed connections

CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th

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.

CWE CWE-755
Vendor nlnet labs
Product routinator
Published Oct 26, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability

Affected Versions

NLnet Labs / Routinator
All versions affected

References

NVD โ†— CVE.org โ†— EPSS Data โ†—
nlnetlabs.nl: https://www.nlnetlabs.nl/downloads/routinator/CVE-2026-72756.txt

Credits

Qifan Zhang, Palo Alto Networks