CVE-2026-5759

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-10-09. A secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A double free and use-after-free vulnerability in the RdbLoadDeletedNodes function of the RDB graph decoders (src/serializers/decoders/*/decode_graph_entities.c) in FalkorDB before 4.18.1 allows a remote attacker who can issue Redis replication commands (for example, against an instance with no password configured) to cause a denial of service or execute arbitrary code in the redis-server process by supplying a crafted RDB stream whose deleted-nodes buffer length is not a multiple of sizeof(NodeID). The length check relies on ASSERT(), which is compiled out in release builds, so the function continues after freeing the buffer, reading it and freeing it a second time.

CVSS v3
9.8
EG Score
9.8CRITICALhigh confidence
EG Risk
49
EG Risk 49/100CISA SSVC

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
Severity98% × 45%
Exploitation1% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.6%
EPSS %ILE
44th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

October 9, 2026

Last Modified

October 9, 2026

Advisory Details (3)

Auto-updated Oct 9, 2026
Patch available. Sources: github_release, github_commit, github_pr.
github_release Patch Available

v4.18.1

Patch available: FalkorDB/FalkorDB v4.18.1

https://github.com/FalkorDB/FalkorDB/releases/tag/v4.18.1
github_pr

fix(serializer): add missing return after free on corrupted RDB buffer

Fix merged in FalkorDB/FalkorDB PR #1843 on 2026-04-10 — awaiting tagged release

https://github.com/FalkorDB/FalkorDB/pull/1843
github_commit

commit 523d98ac7ffe (FalkorDB/FalkorDB)

Fix landed in FalkorDB/FalkorDB commit 523d98ac7ffe — awaiting tagged release

https://github.com/FalkorDB/FalkorDB/commit/523d98ac7ffe99f11a9c95c258025c235f0dff4c

Vendor Advisories for CVE-2026-5759(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 21× in last 7d / 21× 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. 2026-10-11 04:57 UTCGHSA enrichment
  2. 2026-10-11 04:55 UTCGHSA enrichment
  3. 2026-10-11 00:59 UTCGHSA enrichment
  4. 2026-10-10 20:59 UTCEG score recompute
  5. 2026-10-10 20:59 UTCGHSA enrichment
  6. 2026-10-10 20:00 UTCEPSS rescore
  7. 2026-10-10 16:59 UTCGHSA enrichment
  8. 2026-10-10 13:02 UTCGHSA enrichment
  9. 2026-10-10 09:07 UTCGHSA enrichment
  10. 2026-10-10 05:10 UTCGHSA enrichment
  11. 2026-10-10 01:13 UTCGHSA enrichment
  12. 2026-10-09 21:14 UTCEG score recompute
  13. 2026-10-09 21:14 UTCGHSA enrichment
  14. 2026-10-09 20:07 UTCEPSS rescore
  15. 2026-10-09 17:17 UTCGHSA enrichment
  16. 2026-10-09 13:20 UTCGHSA enrichment
  17. 2026-10-09 09:23 UTCEG score recompute
  18. 2026-10-09 09:22 UTCGHSA enrichment
  19. 2026-10-09 05:26 UTCEG score recompute
  20. 2026-10-09 04:33 UTCEG score recompute
  21. 2026-10-09 04:33 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-5759?
CVE-2026-5759 is a critical vulnerability published on October 9, 2026. A double free and use-after-free vulnerability in the RdbLoadDeletedNodes function of the RDB graph decoders (src/serializers/decoders/*/decodegraphentities.c) in FalkorDB before 4.18.1 allows a remote attacker who can issue Redis replication commands (for example, against an instance with no…
When was CVE-2026-5759 disclosed?
CVE-2026-5759 was first published on October 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-5759 actively exploited?
CVE-2026-5759 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (44th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-5759?
CVE-2026-5759 has a CVSS base score of 9.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-5759?
A fix for CVE-2026-5759 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-5759 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-5759

Explore →

Is Your Infrastructure Affected by CVE-2026-5759?

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

Book a Demo →Browse All CVEs