---
id: "CVE-2026-109141"
kind: "vulnerability"
aliases: ["CVE-2026-109141"]
title: "Krill: CA-restricted role gets full permissions on bulk CA import"
severity: "high"
cvss: 8.4
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["authorization", "krill", "other", "rpki", "self-hosted"]
not_affected_if: ["no-cas-restricted-roles"]
published_at: "2026-11-02T16:17:27+00:00"
first_seen_at: "2026-11-02T16:24:04+00:00"
updated_at: "2026-11-02T16:32:49+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109141", "first_seen_at": "2026-11-02T16:24:04+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-11-02T16:32:49+00:00"}]
---

# Krill: CA-restricted role gets full permissions on bulk CA import

A role limited to a list of certificate authorities keeps its full permissions on requests not tied to a CA, including the bulk CA import endpoint. An attacker with that role can add child CAs under any existing CA, grant them resources, and create ROAs.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

Affected versions are not yet published. You are exposed if your Krill server's auth config (config file or OpenID Connect role mapping) has a role restricted to specific CAs (cas = [...]) and you give that role to users you do not fully trust. Review which users hold such roles and check server logs for POST /api/v1/bulk/cas/import calls.

## Timeline

- 2026-11-02T16:24:04+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-109141
- 2026-11-02T16:32:49+00:00 analyst — NVD page not fetchable; only description via signal. NLnet Labs Krill advisories page has no entry yet, GitHub releases latest is 0.16.0 (2026-03-03) with no mention. Affected versions and fix unknown; recheck advisories page and GitHub releases.

## Documents

- [describes] NVD: CVE-2026-109141 https://nvd.nist.gov/vuln/detail/CVE-2026-109141
- [mentions] NLnet Labs Krill security advisories (no entry for this CVE as of 2026-11-02) https://www.nlnetlabs.nl/projects/krill/security-advisories/

## From the sources

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

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_