CVE-2026-108715
LibreNMS through 26.9.1.1 Authorization Bypass via Smokeping Graph auth.inc.php
CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
0th
LibreNMS through 26.9.1.1 contains an authorization bypass vulnerability in includes/html/graphs/smokeping/auth.inc.php that checks the src probe device instead of the rendered target device. Restricted users permitted on a probe device can request smokeping_in or smokeping_out graphs with arbitrary device ids to view latency data and enumerate device names.
| CWE | CWE-639 |
| Vendor | librenms |
| Product | librenms |
| Published | Oct 11, 2026 |
Stay Ahead of the Next One
Get instant alerts for librenms librenms
Be the first to know when new medium vulnerabilities affecting librenms librenms are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
librenms / librenms
0 ≤ 26.9.1.1
References
hackmd.io: https://hackmd.io/@haind/librenms-smokeping-graph-src-device-auth-confusion github.com: https://github.com/librenms/librenms/blob/26.9.1.1/includes/html/graphs/smokeping/auth.inc.php#L3-L7 github.com: https://github.com/librenms/librenms/blob/26.9.1.1/LibreNMS/Util/Graph.php#L190-L198 github.com: https://github.com/librenms/librenms vulncheck.com: https://www.vulncheck.com/advisories/librenms-through-26.9.1.1-authorization-bypass-via-smokeping-graph-auth-inc-php
Credits
HaiND from the Post and Telecommunication Institute of Technology