Dragonfly through 2.0.2 contains an unbounded memory allocation vulnerability that allows unauthenticated clients to exhaust memory by passing a negative COUNT to HRANDFIELD, ZRANDMEMBER or SRANDMEMBER. Attackers can send a single command against a one-element key with a huge negative COUNT to trigger the OOM killer, terminating the instance for all clients.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 1
- First seenCVSS 8.7NVD modified 2026-10-15 22:19
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 7
- https://github.com/dragonflydb/dragonfly
- https://github.com/dragonflydb/dragonfly/blob/8ce4bbb106586057fbd85f71ed353c60d0d5bf87/src/server/hset_family.cc#L1436-L1483
- https://github.com/dragonflydb/dragonfly/blob/8ce4bbb106586057fbd85f71ed353c60d0d5bf87/src/server/set_family.cc#L957-L984
- https://github.com/dragonflydb/dragonfly/blob/8ce4bbb106586057fbd85f71ed353c60d0d5bf87/src/server/zset_family.cc#L1519-L1522
- https://github.com/dragonflydb/dragonfly/issues/8578
- https://www.vulncheck.com/advisories/dragonfly-through-2.0.2-unbounded-memory-allocation-via-negative-count-in-hrandfield-zrandmember-and-srandmember
- https://github.com/dragonflydb/dragonfly/issues/8578