Improper handling of exceptional conditions in Routinator - CVE-2026-72756
Published: October 27, 2026
Vulnerability identifier: #VU157710
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-2026-72756
CWE-ID: CWE-755
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service by terminating Routinator.
The vulnerability exists due to improper handling of filesystem error conditions in Routinator when processing rsync URIs for files obtained over RRDP. A remote attacker can supply a malformed rsync URI containing a path that cannot be stored on disk, such as an excessively long filename or a folder name conflicting with an existing filename, to cause Routinator to exit.
Affected software
Routinator
How to mitigate CVE-2026-72756
Install security update from vendor's website.
Routinator - update to 0.15.3