CVE-2026-104192: critical vulnerability in dragonflydb dragonfly
DragonflyDB stream RDB deserialization double-free
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.6epss 0.3%
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:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected products
dragonflydb · dragonflyRelated CVEs — dragonflydb dragonfly
In the same product, most dangerous first.
CVE-2026-111279HIGHDragonfly through 2.0.2 Unbounded Memory Allocation via Negative COUNT in HRANDFIELD, ZRANDMEMBER and SRANDMEMBEREPSS 0.6%CVE-2026-62357HIGHDragonflyDB `CMS.INITBYDIM` integer overflow leads to a remote, attacker-controlled heap out-of-bounds writeEPSS 0.5%CVE-2026-54341HIGHDragonfly: RESTORE operations may crash the serverEPSS 0.5%CVE-2025-52935CRITICALInteger Overflow or Wraparound vulnerability in dragonflydb/dragonflyEPSS 0.4%CVE-2026-47206LOWDragonfly: RESP Protocol Injection via Lua redis.error_reply() in EvalSerializerEPSS 0.4%