CVE-2026-49232 PUBLISHED

Routinator exits when accepting an incoming HTTP or RTR connection fails

Assigner: NLnet Labs
Reserved: 28.05.2026 Published: 08.06.2026 Updated: 08.06.2026

Routinator exits on any error when accepting incoming HTTP or RTR connections, including ones it can recover from such as running out of file descriptors. This condition can be triggered maliciously by an attacker by opening a large number of connections to the HTTP or RTR server.

This only affects users that make their HTTP or RTR server available to untrusted networks.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
CVSS Score: 8.7

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	High	Availability	Low
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	NLnet Labs
Product	Routinator
Versions	Default: affected unaffected from 0.15.2 to * (excl.)

Solutions

This issue is fixed in 0.15.2 and all later versions.

Credits

X41 D-Sec GmbH finder

References

https://www.nlnetlabs.nl/downloads/routinator/CVE-2026-49232.txt

Problem Types

CWE-755 Improper Handling of Exceptional Conditions CWE