CVE-2026-109142 json
Krill treats a "local parent" as already-authenticated, letting a CA operator act as any child of any CA on the same server
published 2026-11-02 7 d ago modified 2026-11-02 6 d ago also EUVD-2026-115257
- cvss
- 8.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 20%
- public exploits
- 0
- none known
Summary
When a CA's parent lives on the same Krill server: instead of building and verifying a signed CMS message, it runs the RFC 6492 provisioning exchange in-process and trusts the child identity (child_handle) that the caller put in the parent contact. Nothing checks that this child identity actually belongs to the CA making the request.
Patch / fix
- NLnet Labs Krill 0.16.1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 7 d ago
Exploit prediction
0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.4 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L |
Affected products
- NLnet Labs Krill
Classification
- Weakness
-
- CWE-639 Authorization Bypass Through User-Controlled Key
References
-
nlnetlabs.nl
/downloads/krill/CVE-2026-109142.txt
vendor-advisory
Sources
- CVE List CVE-2026-109142
- NVD CVE-2026-109142
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.