Path Traversal in Nlnet Labs Routinator
CVE-2026-49233
Routinator does not properly check the module component of rsync URIs, which are used to create the file system paths for the Routinator cache. This allows for path traversal by having a module name containing .., potentially providing an attacker access to the entire Routinator rsync cache.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (42.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Nlnet Labs Routinator — versions 0.15.2
- Nlnetlabs Routinator
Weakness classification (CWE)
References
- www.nlnetlabs.nl/downloads/routinator/CVE-2026-49233.txt (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-49233?
- CVE-2026-49233 is a high-severity vulnerability in Nlnet Labs Routinator, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-06-08.
- How severe is CVE-2026-49233?
- High severity. CVSS v3 base score is 7.5 out of 10.