CVE-2026-47206: CWE-116: Improper Encoding or Escaping of Output in dragonflydb dragonfly
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.
AI Analysis
Technical Summary
Dragonfly, an in-memory data store, prior to version 1.39.9, is vulnerable to a RESP protocol injection through the Lua redis.error_reply() function in EvalSerializer. This improper encoding or escaping of output (CWE-116) allows an authenticated user to inject arbitrary RESP messages into the connection's response stream. Such injection can lead to response desynchronization in clients that use connection pooling. The vulnerability is addressed and fixed in Dragonfly version 1.39.9.
Potential Impact
An authenticated user can exploit this vulnerability to inject arbitrary RESP messages into the response stream, which may cause response desynchronization in connection-pool clients. This could disrupt normal client-server communication but does not directly lead to privilege escalation, data disclosure, or denial of service based on the available information. The overall impact is considered low.
Mitigation Recommendations
Upgrade Dragonfly to version 1.39.9 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is indicated in the available data.
CVE-2026-47206: CWE-116: Improper Encoding or Escaping of Output in dragonflydb dragonfly
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.
CVSS v4.0
Score 2.3low
Affected software
pkg:github/dragonflydb/dragonflyRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Dragonfly, an in-memory data store, prior to version 1.39.9, is vulnerable to a RESP protocol injection through the Lua redis.error_reply() function in EvalSerializer. This improper encoding or escaping of output (CWE-116) allows an authenticated user to inject arbitrary RESP messages into the connection's response stream. Such injection can lead to response desynchronization in clients that use connection pooling. The vulnerability is addressed and fixed in Dragonfly version 1.39.9.
Potential Impact
An authenticated user can exploit this vulnerability to inject arbitrary RESP messages into the response stream, which may cause response desynchronization in connection-pool clients. This could disrupt normal client-server communication but does not directly lead to privilege escalation, data disclosure, or denial of service based on the available information. The overall impact is considered low.
Mitigation Recommendations
Upgrade Dragonfly to version 1.39.9 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is indicated in the available data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-18T22:25:21.257Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3eb5316e08203f7dd21fc1
Added to database: 06/26/2026, 17:21:53 UTC
Last enriched: 06/26/2026, 17:37:11 UTC
Last updated: 06/26/2026, 18:32:46 UTC
Views: 4
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