Vulnerability · Published Oct 26, 2026 · Assigned by NLnet Labs
CVE-2026-72755Routinator stores TA certificate in cache without validation
Low 3.8
In plain English
A low-severity security flaw in Routinator from NLnet Labs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).
Severity (CVSS 3.1)3.8Low
Exploit odds (30 days)0.2%top 91.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| NLnet Labs | Routinator | see references |
Weakness: CWE-755 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L
References
- https://www.nlnetlabs.nl/downloads/routinator/CVE-2026-72755.txt vendor-advisory