CVE-2026-109141
Krill users restricted to one CA can make any other CA delegate its prefixes and publish ROAs for them via bulk import
The vulnerability gives a role that is restricted to a list of CAs (cas = [...]) its full permission set for every request that is not tied to a CA, including the bulk import endpoint POST /api/v1/bulk/cas/import. It adds a new child CA under any existing CA, gives the child any of that CA's resources, and creates the ROAs given in the request
Fixes and workarounds
Fix
This issue is fixed in 0.16.1 and all later versions.
Source: CNA: NLnet LabsAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| Krill NLnet Labs |
≥ 0.16.1; < * (unaffected, semver)
Other versions: affected |
CNA: NLnet Labs |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 8.4 high |
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L | CNA: NLnet Labs |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://www.nlnetlabs.nl/downloads/krill/CVE-2026-109141.txtCNA: NLnet Labs · vendor-advisory
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