CVE-2026-49233 — routinator
HIGHCVE-2026-49233 is a high-severity (CVSS 7.5) Path Traversal vulnerability in routinator. A fix is available for routinator — see the affected versions and patch details below.
Routinator has cache path traversal when processing the module component of rsync URIs
Exploitation Status
No confirmed exploitation observed yet
- A successful exploit gives an attacker total control of the affected component, not partial access.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2026-49233.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
routinatorReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects crates.io packages — download data is not available via public APIs for these ecosystems.
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 Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🦀crates.io | routinator | all versions | 0.15.2cargo update -p routinator --precise 0.15.2 |
Affected Products
routinatornlnetlabsDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for routinator, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update routinator to 0.15.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-49233 is resolved across your whole dependency graph.
Workarounds
Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
This vulnerability is rated as Important due to the potential for unauthenticated remote repository operators to perform path traversal across Routinator's rsync cache via manipulated module identifiers, leading to unauthorized data disclosure. Routinator is not included in any supported Red Hat Enterprise Linux…
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.Source: Red Hat security advisory for CVE-2026-49233 (CC BY 4.0)
Frequently Asked Questions
Is CVE-2026-49233 in your dependencies?
Find it across crates.io, including transitive dependencies.