CVE-2026-49235 Routinator crashes on specifically crafted RRDP XML files
An attacker can crash the Routinator RPKI validator by sending a specifically crafted RRDP XML file, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-49235?
CVE-2026-49235 is a high-severity denial of service 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
When Routinator encounters a file via RRDP using a specifically crafted Document Type Definition, Routinator crashes.
Weakness: CWE-755
Which versions are affected by CVE-2026-49235?
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-2026-49235?
Upgrade routinator to 0.15.2 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-49235 being exploited?
There is no known exploitation of CVE-2026-49235 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-2026-49233 Routinator cache path traversal using rogue rsync URIs
- 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-5qf9-cf9c-hjc6.