Vulnerability · Published Jun 8, 2026 · Assigned by NLnet Labs
CVE-2026-49233Routinator cache path traversal using rogue rsync URIs
High 8.3
In plain English
A high-severity path traversal in Routinator from NLnet Labs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities).
Severity (CVSS 4.0)8.3High
Exploit odds (30 days)0.4%top 61.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| NLnet Labs | Routinator | see references |
Weakness: CWE-22 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
References
- https://www.nlnetlabs.nl/downloads/routinator/CVE-2026-49233.txt vendor-advisory