CVE-2026-62357

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 69% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
8.8
EG Score
8.8(medium)
EG Risk
71(Attend)
EG Risk 71/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
31%
KEV
Not listed

Published

August 18, 2026

Last Modified

August 19, 2026

Advisory Details (4)

Auto-updated Aug 18, 2026
Patch available. Sources: github, github_pr, github_commit, github_release.
github_release Patch Available

v1.40.0

Patch available: dragonflydb/dragonfly v1.40.0

https://github.com/dragonflydb/dragonfly/releases/tag/v1.40.0
github_commit

commit c004623249fe (dragonflydb/dragonfly)

Fix landed in dragonflydb/dragonfly commit c004623249fe — awaiting tagged release

https://github.com/dragonflydb/dragonfly/commit/c004623249fe2151dc5d64e21364fb9fb07c90d3
github_pr

fix: bound CMS dimensions to prevent heap overflow on INITBYDIM/INITBYPROB

Fix merged in dragonflydb/dragonfly PR #7647 on 2026-06-19 — awaiting tagged release

https://github.com/dragonflydb/dragonfly/pull/7647
github Patch Available

DragonflyDB `CMS.INITBYDIM` integer overflow leads to a remote, attacker-controlled heap out-of-bounds write · Advisory · dragonflydb/dragonfly · GitHub

https://github.com/dragonflydb/dragonfly/security/advisories/GHSA-cmmv-h748-v93x

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 24× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-30 03:47 UTCEG score recompute
  2. 2026-08-30 01:22 UTCEPSS rescore
  3. 2026-08-29 03:58 UTCEG score recompute
  4. 2026-08-28 21:42 UTCEPSS rescore
  5. 2026-08-28 01:41 UTCEG score recompute
  6. 2026-08-27 14:25 UTCEPSS rescore
  7. 2026-08-27 01:54 UTCEG score recompute
  8. 2026-08-26 14:46 UTCEPSS rescore
  9. 2026-08-25 14:14 UTCEG score recompute
  10. 2026-08-25 13:49 UTCEPSS rescore
  11. 2026-08-24 14:27 UTCEG score recompute
  12. 2026-08-23 02:41 UTCEG score recompute
  13. 2026-08-23 00:19 UTCEPSS rescore
  14. 2026-08-22 02:55 UTCEG score recompute
  15. 2026-08-21 23:49 UTCEPSS rescore
  16. 2026-08-21 03:07 UTCEG score recompute
  17. 2026-08-20 22:55 UTCEPSS rescore
  18. 2026-08-20 03:20 UTCEG score recompute
  19. 2026-08-19 17:04 UTCEPSS rescore
  20. 2026-08-19 15:25 UTCEG score recompute
  21. 2026-08-19 14:58 UTCEG score recompute
  22. 2026-08-18 16:33 UTCEG score recompute
  23. 2026-08-18 15:31 UTCEG score recompute
  24. 2026-08-18 15:29 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-62357?
CVE-2026-62357 is a high vulnerability published on August 18, 2026. 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…
When was CVE-2026-62357 disclosed?
CVE-2026-62357 was first published in the National Vulnerability Database on August 18, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-62357 actively exploited?
CVE-2026-62357 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 68.7% of all scored CVEs.
What is the CVSS score of CVE-2026-62357?
CVE-2026-62357 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-62357?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-62357, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-62357

Explore →

Is Your Infrastructure Affected by CVE-2026-62357?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs