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Release history

LibreNMS releases

Community-based GPL-licensed network monitoring system

All releases

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26.5.1 Bug fix

ifOperStatus fix + port description

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26.5.0 Breaking risk
Auth RBAC

FortiOS mapping removal + proxy default

26.4.1 Breaking risk
Breaking changes
  • Rename OS fujitsuiRMC to fujitsu-irmc
Full changelog

26.4.1

(2026-04-22)

A big thank you to the following 3 contributors this last month:

Thanks to maintainers and others that helped with pull requests this month:

Breaking Change

Device

  • Updated Ufi S9610 36d transceiver detection (#19511) - laf

Webui

  • Fix text colour in dark mode for port popover (#19506) - laf

Bug

  • Fix path to composer wrapper in ComposerHelper (#19508) - laf
  • Failture counter limits need to be grater then 0 (#19504) - mpikzink

Cleanup

Documentation

Misc

26.4.0 Breaking risk
Breaking changes
  • API access page refactored to Laravel with improved security
  • Alerting operations added
  • Transceiver raw date storage format changed
Security fixes
  • XSS vulnerability fixed in alert template list
  • libvirt CLI commands now properly escaped
  • nfsen CLI command injection prevention
Notable features
  • SSL Certificate management
  • Auth Roles management
  • New alert transports and device graph enhancements
Full changelog

26.4.0

(2026-04-20)

A big thank you to the following 36 contributors this last month:

Thanks to maintainers and others that helped with pull requests this month:

Feature

Breaking Change

  • Refactor api-access page to Laravel and improve security (#19431) - laf
  • Added alerting operations (#19306) - laf
  • Store raw date for transceivers (#18026) - murrant

Security

Device

Webui

  • Improve visual space for device actions (#19469) - murrant
  • Added severity buttons to Alert widget filter (#19466) - laf
  • Updated Widgets controller to check for user access (#19465) - laf
  • Fix unhandled Oxidized ConnectionException causing CRITICAL crash on device config tab (#19443) - eduardomozart
  • Use localized timezone for Last Polled and Last Discovered in Device Edit view (#19426) - eduardomozart
  • Add 90-day availability bar to device overview (#19342) - Palerm0
  • FDB tables don't show duplicate IPs (#19303) - murrant
  • Permissions refinement (#19295) - murrant
  • Remove duplicate font-size in geomap, improve accessibility (#19285) - as8net
  • Added filter for sensors to filter for errors, warning, alert and unknown values (#18639) - shrank
  • Add option for ports controller to use ARP/MAC table lookup for IPv4 neighbours (#16899) - eskyuu

Alerting

Applications

  • Update to support form factor, rpm, and over temp info from extend, update docs, minor poller fixes, and add more alert examples (#19169) - VVelox

Api

  • Added ability to specify graph type to override system settings in api (#19343) - laf
  • Device groups API: Allow device groups to contain an empty list of devices (#19299) - richard-ririe

Discovery

  • Modify cron example to use lnms device:discover new (#19344) - murrant

Authentication

  • Socialite decouples token attribute lookup from OAuth scopes (#19296) - Jannos-443

Bug

Refactor

Cleanup

Documentation

Tests

Misc

Internal Features

  • Capture more complete debug logs when running tests (#19316) - eskyuu

Dependencies

26.3.0 Breaking risk
Breaking changes
  • New Procurve PoE Power Total sensor
  • Removed netcmd ajax
  • Cyberpower sensor alert updates
Notable features
  • Added XCP-NG Virtual Machine support
  • Added FS.com Industrial switch support
  • Added Eltex MES5324A support
26.2.0 Security relevant
Breaking changes
  • Alertmanager transport strips stc_ label prefix
  • Removed logfile function
  • Removed tcpdf and pest libraries
Security fixes
  • Fixed port group delete XSS
  • Fixed device group delete XSS
  • Fixed alert rule XSS
Notable features
  • Added dispatcher log stdout
  • Added table export all records button
26.1.0 Breaking risk
Breaking changes
  • Changed Algcom SM type to environment
  • Allow alerts to match users through device groups
  • Cisco IE3200/IE3300 now classified as IOS-XE
Notable features
  • Added Nokia ESA/ISA/NAT sensors
  • Added Vertiv DCS support
  • Added Nokia 1830 PSS support

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