CVE-2026-54341 Dragonfly: RESTORE operations may crash the server
An unauthenticated remote attacker can crash the DragonflyDB server by sending a crafted RESTORE command, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-54341?
CVE-2026-54341 is a high-severity denial of service vulnerability in dragonflydb dragonfly, published on 26 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-125
Which versions are affected by CVE-2026-54341?
How do I fix CVE-2026-54341?
No fix has been published for CVE-2026-54341 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-54341 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54341 exists.
Sources
Also known as GHSA-cwjr-j869-h8q9.