# 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.

- **Severity:** High 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:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 8 Jun 2026
- **Updated:** 8 Jun 2026
- **Also known as:** GHSA-5qf9-cf9c-hjc6

## 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 (Improper Handling of Exceptional Conditions)

## Which versions are affected by CVE-2026-49235?

2 open source packages ship an affected version, including routinator. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `routinator` | crates.io | All versions | 0.15.2 |
| `routinator` | crates.io | All versions | 0.15.2 |

Products: Nlnetlabs Routinator.

## How do I fix CVE-2026-49235?

Upgrade routinator to 0.15.2 or later.

## 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](https://insights.sbomify.com/CVE-2023-39916/): Possible path traversal when storing RRDP responses (critical 9.3)
- [CVE-2026-49233](https://insights.sbomify.com/CVE-2026-49233/): Routinator cache path traversal using rogue rsync URIs (high 8.3)
- [CVE-2026-49234](https://insights.sbomify.com/CVE-2026-49234/): Routinator crashes on specifically crafted ASN strings in the API (high 8.2)
- [CVE-2023-39915](https://insights.sbomify.com/CVE-2023-39915/): Crashes on parsing certain invalid RPKI objects (high 7.5)
- [CVE-2022-3029](https://insights.sbomify.com/CVE-2022-3029/): Fatal error on incorrect base64 data in RRDP (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-49235 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-49235 in the wild and no public exploit code.

Affected packages and fixed versions:
- routinator (crates.io): affected all versions; fixed in 0.15.2
- routinator (crates.io): affected all versions; fixed in 0.15.2

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-49235/ (Markdown: https://insights.sbomify.com/CVE-2026-49235/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-49235
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-49235
- OSV: https://osv.dev/vulnerability/CVE-2026-49235

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-49235/
Summaries are generated and may contain mistakes; the official description above is the record.