CVE-2026-62357CWE-190

CVE-2026-62357

published August 18, 2026

CVSS

8.8

EPSS

Percentile

43.6

In the wild

Unconfirmed

What it is

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.

The record

Technical detail

CVSS: 8.8 · NONE
CVSS v4.0: 8.8 · 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
EPSS: 0.00524 · 43.6th percentile
Weakness: CWE-190 · Integer Overflow or Wraparound
Published: 2026-08-18T20:18Z

References (5)

https://github.com/dragonflydb/dragonfly/commit/c004623249fe2151dc5d64e21364fb9fb07c90d3 · [email protected]https://github.com/dragonflydb/dragonfly/pull/7647 · [email protected]https://github.com/dragonflydb/dragonfly/releases/tag/v1.40.0 · [email protected]https://github.com/dragonflydb/dragonfly/security/advisories/GHSA-cmmv-h748-v93x · [email protected]https://github.com/dragonflydb/dragonfly/security/advisories/GHSA-cmmv-h748-v93x · 134c704f-9b21-4f2e-91b3-4a467353bcc0

EPSS history

Timeline

18 AUG 15:18Z
DragonflyDB `CMS.INITBYDIM` integer overflow leads to a remote, attacker-controlled heap out-of-bounds write
cvelistv5