CVE-2026-62357: high-severity vulnerability in dragonflydb dragonfly
DragonflyDB `CMS.INITBYDIM` integer overflow leads to a remote, attacker-controlled heap out-of-bounds write
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.5%
Dragonfly is an in-memory data store built for modern application workloads. Prior to 1.40.0, CMS.INITBYDIM and CMS.INITBYPROB accept dimensions whose width times depth times sizeof(int64_t) overflows in src/core/cms.cc, allocating an undersized counter buffer while CMS.INCRBY and CMS.QUERY use the unbounded dimensions, which allows an unauthenticated remote client to corrupt or disclose adjacent heap memory and crash the server. This issue is fixed in version 1.40.0.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N
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-2026-54341HIGHDragonfly: 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%CVE-2026-104192CRITICALDragonflyDB stream RDB deserialization double-freeEPSS 0.3%