There are 2 unique codex entries in the Organizations section from Uprisings. They are accessible to all players regardless of class or faction.
Alliance Intelligence Report: The Dust Vipers is obtained from killing Bel Nerodia & G9-RX during "[UPRISING] Done and Dusted" mission.
Codex type: Organizations | Faction: Both | Class: All
Associated Achievement: None
Alliance Intelligence Report: White Maw Uprising is obtained from killing Forgemaster Droub during "[UPRISING] Firefrost" mission.
Codex type: Organizations | Faction: Both | Class: All
Associated Achievement: None