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
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
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
- Record
CVE-2026-109141- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L - Weakness
- CWE-639
- Updated
- 2026-11-02
EUVDEUVD-2026-115256
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
- Record
EUVD-2026-115256- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-9rcf-27j4-vxg2
The vulnerability gives a role that is restricted to a list of CAs (cas = [...]) its full...
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
- Record
GHSA-9rcf-27j4-vxg2- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L - Weakness
- CWE-639
- Updated
- 2026-11-02
NVD
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
- Record
CVE-2026-109141- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L - Weakness
- CWE-639
- Updated
- 2026-11-03
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD, NVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-109141 is a high vulnerability (CVSS 8.4) in Nlnet Labs Krill, published November 2, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.28%, the 20th percentile. No source names a fixed version.