---
id: "CVE-2026-72756"
kind: "vulnerability"
aliases: ["CVE-2026-72756"]
title: "Routinator: crafted RRDP rsync URI makes the RPKI validator exit"
severity: "high"
cvss: 7.5
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "routinator", "rpki", "self-hosted"]
not_affected_if: ["no-routinator"]
published_at: "2026-10-26T18:18:42+00:00"
first_seen_at: "2026-10-26T18:31:44+00:00"
updated_at: "2026-10-26T18:33:45+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72756", "first_seen_at": "2026-10-26T18:31:44+00:00"}]
---

# Routinator: crafted RRDP rsync URI makes the RPKI validator exit

Routinator, an RPKI validator, exits when an rsync URI obtained over RRDP contains a path that cannot be stored on disk, such as overly long file names or folder names that clash with existing file names. An attacker who controls a publication point can stop the validator from running.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Routinator version with `routinator --version` and compare it against the fixed release in the advisory.
- Confirm whether the instance fetches repositories over RRDP with `routinator --version` and the configuration file; the sources do not give a config key.

## Fix

- Upgrade Routinator to the fixed release listed in the NVD entry (version unknown from the sources).
- Until patched, monitor the validator process for unexpected exits; the sources do not name a workaround.

## Timeline

- 2026-10-26T18:31:44+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-72756

## From the sources

Routinator exits when an rsync URI for a file obtained over RRDP contains a path that cannot be stored on disk, such as too long file names, and folder names that overlap with existing file names.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_