Vulnerability details
CVE-2026-104192
DragonflyDB stream RDB deserialization double-free
Official description
Dragonfly is an in-memory data store built for modern application workloads. Prior to 1.40, OpaqueObjLoader::CreateStream in src/server/rdb_load.cc can associate one streamNACK with a consumer group's global PEL and a consumer-local PEL, then free the shared object when a duplicate consumer entry is rejected. Cleanup subsequently frees the same object again. In the default configuration, where Dragonfly ships with authentication disabled, an unauthenticated client can trigger the double-free by sending a crafted serialized stream to RESTORE, causing allocator corruption, denial of service, and potentially attacker-controlled code execution as the Dragonfly service account. The source fix has not yet been mapped to a published release.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.6Critical | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| dragonflydb | dragonfly | < 1.40 | CVEProject cvelistV5 (CNA) |
References and advisories
3- https://github.com/dragonflydb/dragonfly/security/advisories/GHSA-cg35-6jf4-crfh x_refsource_CONFIRM
- https://github.com/dragonflydb/dragonfly/pull/7929 x_refsource_MISC
- https://github.com/dragonflydb/dragonfly/commit/6c6b27a5cfd03d67eb9583ab84a0f0709e3bc77e x_refsource_MISC
Details
- Published
- 2026-10-13
- Last updated
- 2026-10-13
- State
- Published
- Assigner (CNA)
- GitHub_M
- Kolun priority
- 19 · Low
Exploit prediction (EPSS)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-415Double Free