CVE-2026-47206 Dragonfly: RESP Protocol Injection via Lua redis.error_reply() in EvalSerializer
An authenticated user can inject RESP messages via Lua error replies, causing client desynchronization and potential data exposure or service disruption.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-47206?
CVE-2026-47206 is a low-severity vulnerability in dragonflydb dragonfly, published on 26 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Dragonfly is an in-memory data store built for modern application workloads. Prior to 1.39.9, Dragonfly has a RESP Protocol Injection via Lua redis.error_reply() in EvalSerializer. An authenticated user can inject arbitrary RESP messages into the connection's response stream, potentially causing response desynchronization in connection-pool clients. This vulnerability is fixed in 1.39.9.
Weakness: CWE-116
Which versions are affected by CVE-2026-47206?
How do I fix CVE-2026-47206?
No fix has been published for CVE-2026-47206 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-47206 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-47206 exists.
Sources
Also known as GHSA-h77h-c6hc-qc9h.