Infinite loop in Routinator - CVE-2026-72758
Published: October 27, 2026
Vulnerability identifier: #VU157712
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-72758
CWE-ID: CWE-835
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service through memory exhaustion.
The vulnerability exists due to a loop with an unreachable exit condition in Routinator's AS range parser when parsing a range whose maximum value is smaller than its minimum value. A remote attacker can supply a malformed AS range to cause parsing to continue until memory is exhausted and Routinator exits.
Affected software
Routinator
How to mitigate CVE-2026-72758
Install security update from vendor's website.
Routinator - update to 0.15.3