CVE-2026-72752

Medium

Description

Routinator runs out of memory when the JSON output is requested many times concurrently. This condition can be triggered maliciously by an attacker by opening a large number of connections to the HTTP server. Additionally Routinator runs into a stack overflow and exits when a payload item with too much metadata is discarded at once. This only affects users that make their HTTP or RTR server available to untrusted networks.

SeverityMedium

CVSS6.5

Exploit probability—

ProductRoutinator

PublishedOct 26, 2026

First seenOct 26, 2026

Weakness typeCWE-755CWE-755

How to fix

Vendor advisories

nlnetlabs.nl/downloads/routinator/CVE-2026-72752.txt

Affected products

Product	Affected versions	Fixed in
NLnet Labs Routinator	No range specified	—

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