CVE-2026-72755: Routinator stores TA certificate in cache without validation
Published Oct 26, 2026
·Updated
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 Software
1 affected component
Nlnet Labs Routinator
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Routinatorto a version that resolves this vulnerability.Fixed in 0.15.3
Event History
Oct 26, 2026
CVE Published
via MITRE·05:06 PM
Data Sourced
via MITRE·05:06 PM
RemedyDescriptionSeverityWeakness
Frequently Asked Questions
1
What level of access does an attacker need to exploit this issue?
The vulnerability is rated with high privileges required (PR:H). The available data does not identify which specific privileges or deployment role are required.
2
What security impact can result from a successful exploit?
The stated impact is limited to integrity and availability, with no confidentiality impact. It can cause a known-good trust anchor certificate in the cache to be overwritten by a newly retrieved certificate that later fails validation.