CVE-2026-49233 Routinator cache path traversal using rogue rsync URIs
An attacker can exploit path traversal in Routinator's rsync URI handling to access the entire cache directory, potentially exposing sensitive RPKI data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-49233?
CVE-2026-49233 is a high-severity path traversal vulnerability in NLnet Labs Routinator, published on 8 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-22
Which versions are affected by CVE-2026-49233?
2 open source packages ship an affected version, including routinator. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
routinator crates.io | All versions | 0.15.2 |
routinator crates.io | All versions | 0.15.2 |
Products include Nlnetlabs Routinator.
How do I fix CVE-2026-49233?
Upgrade routinator to 0.15.2 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-49233 being exploited?
There is no known exploitation of CVE-2026-49233 in the wild and no public exploit code.
Other vulnerabilities in NLnet Labs Routinator
- CVE-2023-39916 Possible path traversal when storing RRDP responses
- CVE-2026-49235 Routinator crashes on specifically crafted RRDP XML files
- CVE-2026-49234 Routinator crashes on specifically crafted ASN strings in the API
- CVE-2023-39915 Crashes on parsing certain invalid RPKI objects
- CVE-2022-3029 Fatal error on incorrect base64 data in RRDP
Sources
Also known as GHSA-33mj-99mg-8g73.