CVE-2026-62357
DragonflyDB `CMS.INITBYDIM` integer overflow leads to a remote, attacker-controlled heap out-of-bounds write
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-190 |
| Vendor | dragonflydb |
| Product | dragonfly |
| Published | Aug 18, 2026 |
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Affected Versions
dragonflydb / dragonfly
< 1.40.0
References
github.com: https://github.com/dragonflydb/dragonfly/security/advisories/GHSA-cmmv-h748-v93x github.com: https://github.com/dragonflydb/dragonfly/pull/7647 github.com: https://github.com/dragonflydb/dragonfly/commit/c004623249fe2151dc5d64e21364fb9fb07c90d3 github.com: https://github.com/dragonflydb/dragonfly/releases/tag/v1.40.0