CVE-2026-62357DragonflyDB `CMS.INITBYDIM` integer overflow leads to a remote, attacker-controlled heap out-of-bounds write
Updated under an hour ago ()
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It affects dragonflydb dragonfly. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 8.8 HIGH (v4.0, CNA)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
- Weakness (CWE)
- CWE-190
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Aug 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
dragonflydb dragonfly dragonflydb:dragonfly (from the name) | before 1.40.0 | CNA record |
References
- https://github.com/dragonflydb/dragonfly/security/advisories/GHSA-cmmv-h748-v93xx-refsource-confirm
- https://github.com/dragonflydb/dragonfly/pull/7647x-refsource-misc
- https://github.com/dragonflydb/dragonfly/commit/c004623249fe2151dc5d64e21364fb9fb07c90d3x-refsource-misc
- https://github.com/dragonflydb/dragonfly/releases/tag/v1.40.0x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.