CVE-2026-108715
LibreNMS through 26.9.1.1 Authorization Bypass via Smokeping Graph auth.inc.php
librenms librenms
CVSS
5.3MediumExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 13 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.27%Chance of exploitation activity in the next 30 days, higher than 18% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Description
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.
Text from CVE List
Affected versions 1
- librenmsaffected: all versions through 26.9.1.1CVE List
References 5
- hackmd.io/@haind/librenms-smokeping-graph-src-device-auth-confusionAdvisoryvia CVE List
- vulncheck.com/advisories/librenms-through-26.9.1.1-authorization-bypass-via-smokeping-graph-auth-inc-phpAdvisoryvia CVE List
- github.com/librenms/librenms/blob/26.9.1.1/includes/html/graphs/smokeping/auth.inc.php#L3-L7Referencevia CVE List
- github.com/librenms/librenms/blob/26.9.1.1/LibreNMS/Util/Graph.php#L190-L198Referencevia CVE List
- github.com/librenms/librenmsReferencevia CVE List