CVE-2026-109140
📛 CVE Title
Krill login-session tokens reuse their encryption nonce across restarts, so any user who can log in can forge an "admin" token
Description
The vulnerability is that Krill encrypts every login-session token with a nonce built from a counter that is reset to 0 on every Krill restart, so the same (key, nonce) pair is used again after each restart.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- NLnet Labs
- CVSS severity
- HIGH
- CVSS score
- 8.4 / 10
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L- Effective score
- 8.4 / 10 HIGH source: CNA overview
- CWE(s)
-
CWE-323 - Reserved
- 2026-10-12
- Published
- 2026-11-02 15:41 UTC
- Last updated
- 2026-11-02 16:12 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/109xxx/CVE-2026-109140.json
- Linked Threat
- CVE-2026-109140 — Krill login-session tokens reuse their encryption nonce across restarts, so any user who can log in can forge an "admin" token
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-11-02 16:17:26 UTC
- NVD last modified
- 2026-11-02 19:35:33 UTC
- NVD CVSS v3.1
- 8.4 / 10 HIGH source: sep@nlnetlabs.nl
- NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L- Exploitability subscore
- 1.8 / 10
- Impact subscore
- 6.0 / 10
NVD / KEV / EPSS data refreshed 2026-11-03 08:24 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
Affected products (1)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| NLnet Labs | Krill |
0.16.1 (unaffected)
|
— |
Vendor references (1)
References embedded in the original CVE record by the assigning CNA.
- https://www.nlnetlabs.nl/downloads/krill/CVE-2026-109140.txt vendor-advisory
MITRE references (1) cveawg.mitre.org
Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.
- https://www.nlnetlabs.nl/downloads/krill/CVE-2026-109140.txt vendor-advisory
Web references (0)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
No web references attached yet.
NVD-tagged references (1)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://www.nlnetlabs.nl/downloads/krill/CVE-2026-109140.txt sep@nlnetlabs.nl
Remediations (10)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:blog.qualys.com
Microsoft has released its October 2026 Patch Tuesday security updates, addressing vulnerabilities across its products and services.
2026-11-03 08:23 UTC -
web:community.progress.com
A critical command injection vulnerability was identified in the Early Access Release of Progress DataDirect Autonomous REST Connector AI Model Generator agents available in the progress/datadirect-arc-ai-model-gen public GitHub repository. Updated agent definitions are available and address the vulnerability.
2026-11-03 08:23 UTC -
web:learn.microsoft.com
In this library you will find the following security documents that have been released by the Microsoft Security Response Center (MSRC). The MSRC investigates all reports of security vulnerabilities affecting Microsoft products and services, and releases these documents as part of the ongoing effort ...
2026-11-03 08:23 UTC -
web:msrc.microsoft.com
The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.
2026-11-03 08:23 UTC -
web:senserva.com
Every Microsoft security patch (KB) and the CVEs it fixes, with severity, CVSS, and CISA KEV status. Cross-linked to the CVE reference.
2026-11-03 08:23 UTC -
web:source.android.com
This Section contains the available Android Security Bulletins, which provide fixes for possible issues affecting Android devices.
2026-11-03 08:23 UTC -
web:threatprotect.qualys.com
Microsoft October Patch Tuesday Edition releases patches for 1414 vulnerabilities with 2 zero-days and 78 critical.
2026-11-03 08:23 UTC -
web:www.oracle.com
This Critical Patch Update contains 1448 new security patches across the product families listed below. Please note that a My Oracle Support (MOS) note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at July 2026 Critical Patch Update: Executive Summary and Analysis.
2026-11-03 08:23 UTC -
web:www.oracle.com
Prior Critical Patch Update and Critical Security Patch Update advisories should be reviewed for information regarding earlier published security patches. Refer to Critical Patch Updates, Critical Security Patch Updates, Security Alerts and Bulletins for information about Oracle Security advisories.
2026-11-03 08:23 UTC -
web:www.wiz.io
Understand the critical aspects of CVE - 2026 -91403 with a detailed vulnerability assessment, exploitation potential, affected technologies, and remediation guidance.
2026-11-03 08:23 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2026-109140.json.
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