Vulnerability record · CVE-2026-62357 · published 18 August 2026

CVE-2026-62357: Integer overflow vulnerability

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.

8.8 CVSS 4.0 High EPSS 0.52% · top 57.9% CWE-190 · Integer overflow Deferred

8.8CVSS 4.0 base score

0.52%EPSS exploitation probability, 30 days

NoNot in CISA KEV

0Affected product versions listed by NVD

5References

10 Sep 2026Last modified by NVD

Description

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

Link	Tags
https://github.com/dragonflydb/dragonfly/commit/c004623249fe2151dc5d64e21364fb9fb07c90d3
https://github.com/dragonflydb/dragonfly/pull/7647
https://github.com/dragonflydb/dragonfly/releases/tag/v1.40.0
https://github.com/dragonflydb/dragonfly/security/advisories/GHSA-cmmv-h748-v93x
https://github.com/dragonflydb/dragonfly/security/advisories/GHSA-cmmv-h748-v93x

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Source: NIST National Vulnerability Database (record CVE-2026-62357), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.