---
id: CVE-2026-72755
title: Routinator stores TA certificate in cache without validation
summary: >-
  Routinator stores a newly-retrieved TA certificate via HTTPS in cache without
  validation, potentially overwriting a known good TA certificate even if
  validation fails.
severity: low
cvss: 3.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L'
cvssSource: cna
cwe:
  - CWE-755
vendor: NLnet Labs
product: Routinator
affected:
  - Routinator (all versions)
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-26T17:46:52.938139Z'
published: '2026-10-26'
updated: '2026-10-26'
sourceUpdated: '2026-10-26T17:57:33.844Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-72755'
references:
  - url: 'https://www.nlnetlabs.nl/downloads/routinator/CVE-2026-72755.txt'
tags:
  - cve.org
ingestedAt: '2026-10-26T17:33:33.059Z'
epss: 0.00184
epssPercentile: 0.07951
---

## Overview

Routinator stores a newly-retrieved TA certificate via HTTPS in cache without validation, potentially overwriting a known good TA certificate even if validation fails.

## Affected

- `Routinator (all versions)`

## Remediation

This issue is fixed in 0.15.3 and all later versions.