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OpenAdvisories
High · 7.5 CVE-2026-54341 EUVD-2026-39811

Dragonfly: RESTORE operations may crash the server

Published Jun 26, 2026 · Updated Jun 26, 2026 · Assigned by GitHub_M

Description

Dragonfly is an in-memory data store built for modern application workloads. Prior to 1.39.0, a crafted RESTORE payload triggers an out-of-bounds read in DragonflyDB's listpack collection loaders, crashing the entire server process (SIGSEGV). Because DragonflyDB requires no authentication by default and RESTORE is a normal keyspace command, an unauthenticated remote attacker can crash the server with a single ~24-byte command — a remote, repeatable denial of service. This vulnerability is fixed in 1.39.0.

Affected products

VendorProductAffectedFixed
dragonflydb dragonfly < 1.39.0 —

References