CVE-2026-72752 Details
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.
A denial-of-service vulnerability has been identified in NLnet Labs Routinator versions prior to and including 0.15.2. The issue arises when the JSON output is requested multiple times concurrently, causing the application to run out of memory. This vulnerability can be exploited by opening a large number of connections to the HTTP server, leading to memory exhaustion. Additionally, Routinator experiences a stack overflow and crashes when a payload item containing excessive metadata is discarded all at once. This stack overflow issue also causes a denial-of-service condition. Users who expose their HTTP or RTR server to untrusted networks are particularly affected by these vulnerabilities.
Users are advised to upgrade to Routinator version 0.15.3 or later.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 26, 2026CISA-ADP
Assessed Oct 26, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.nlnetlabs.nl/downloads/routinator/CVE-2026-72752.txt | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-755 | Improper Handling of Exceptional Conditions | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| NLnet Labs Routinator | <= 0.15.2 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 26, 2026 | New CVE Received | [email protected] |
| Oct 26, 2026 | CVE Modified | CISA-ADP |