CVE-2026-7826

CRITICALPre-NVD 9.19.1
EchelonGraph scoreHIGH confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 9.1 from GitHub Security Advisory (severity: HIGH) published 2026-10-09. A secondary CVSS source baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week

Also known asEUVD-2026-95475 (ENISA EUVD) · GHSA-fmqx-854h-cfff (GitHub Security Advisories)Source: ENISA EUVD

9.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 9.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Fixed versions, as the CVE record's CNA (Securin) states them: "Upgrade FalkorDB to version 4.18.4 or later."

A heap-based out-of-bounds read in the BufferSerializerIOv2_ReadBuffer function (src/serializers/serializer_io.c) in FalkorDB before 4.18.4 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 disclose heap memory by supplying a crafted RDB stream whose sub-buffer length field exceeds the remaining buffer size. The only bounds check is an ASSERT(), which is compiled out in release builds, so memcpy() reads past the end of the heap allocation.

CVSS v3
9.1
EG Score
9.1CRITICALhigh confidence
EG Risk
56
EG Risk 56/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity91% × 45%
Impact severity (EG Severity): CVSS 9.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
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
0.4%
EPSS %ILE
37th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (9.1): severity, escalated by confirmed exploitation. This CVE's 9.1 is its impact severity (EG Severity), not escalated.

EG Severity
9.1 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-01). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; 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 (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

October 9, 2026

Last Modified

October 15, 2026

Advisory Details (3)

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

v4.18.4

Patch available: FalkorDB/FalkorDB v4.18.4

https://github.com/FalkorDB/FalkorDB/releases/tag/v4.18.4
GitHub commit

commit 55d986f45ecd (FalkorDB/FalkorDB)

Fix landed in FalkorDB/FalkorDB commit 55d986f45ecd — awaiting tagged release

https://github.com/FalkorDB/FalkorDB/commit/55d986f45ecd5d80f7a9e5e138e8b0f96535b48c
GitHub pull request

fix(serializer): add runtime bounds checks in BufferSerializerIOv2_ReadBuffer

Fix merged in FalkorDB/FalkorDB PR #1972 on 2026-05-07 — awaiting tagged release

https://github.com/FalkorDB/FalkorDB/pull/1972

Vendor Advisories for CVE-2026-7826(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 95× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-11-01 18:49 UTCEG score recompute
  2. 2026-11-01 18:49 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  3. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  4. 2026-10-31 17:49 UTCEG score recompute
  5. 2026-10-31 17:49 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  6. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  7. 2026-10-30 16:47 UTCEG score recompute
  8. 2026-10-30 16:47 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  9. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  10. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  11. 2026-10-29 15:47 UTCEG score recompute
  12. 2026-10-29 15:47 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  13. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  14. 2026-10-28 14:45 UTCEG score recompute
  15. 2026-10-28 14:45 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  16. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  17. 2026-10-27 13:13 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  18. 2026-10-27 02:57 UTCEG score recompute
  19. 2026-10-27 02:56 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  20. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  21. 2026-10-25 21:53 UTCEG score recompute
  22. 2026-10-25 21:53 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  23. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  24. 2026-10-25 14:00 UTCEG score recompute
  25. 2026-10-24 20:52 UTCEG score recompute
Show 70 more
  1. 2026-10-24 20:52 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  2. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  3. 2026-10-23 19:52 UTCEG score recompute
  4. 2026-10-23 19:52 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  5. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  6. 2026-10-22 18:51 UTCEG score recompute
  7. 2026-10-22 18:51 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  8. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  9. 2026-10-21 17:50 UTCEG score recompute
  10. 2026-10-21 17:50 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  11. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  12. 2026-10-20 16:49 UTCEG score recompute
  13. 2026-10-20 16:49 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  14. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  15. 2026-10-19 22:24 UTCEG score recompute
  16. 2026-10-19 22:23 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  17. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  18. 2026-10-18 21:17 UTCEG score recompute
  19. 2026-10-18 21:17 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  20. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  21. 2026-10-18 03:11 UTCEG score recompute
  22. 2026-10-17 20:16 UTCEG score recompute
  23. 2026-10-17 20:15 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  24. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  25. 2026-10-16 19:14 UTCEG score recompute
  26. 2026-10-16 19:13 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  27. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  28. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  29. 2026-10-15 16:27 UTCEG score recompute
  30. 2026-10-15 16:27 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  31. 2026-10-15 15:58 UTCEG score recompute
  32. 2026-10-15 15:57 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  33. 2026-10-15 06:00 UTCEG score recompute
  34. 2026-10-15 06:00 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  35. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  36. 2026-10-14 01:38 UTCEG score recompute
  37. 2026-10-14 01:38 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  38. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  39. 2026-10-12 21:49 UTCEG score recompute
  40. 2026-10-12 21:49 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  41. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  42. 2026-10-12 15:36 UTCEG score recompute
  43. 2026-10-12 03:11 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  44. 2026-10-11 22:49 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  45. 2026-10-11 19:23 UTCEG score recompute
  46. 2026-10-11 18:27 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  47. 2026-10-11 16:38 UTCEG score recompute
  48. 2026-10-11 14:04 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  49. 2026-10-11 13:57 UTCEG score recompute
  50. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  51. 2026-10-11 09:44 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  52. 2026-10-11 05:22 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  53. 2026-10-11 01:01 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  54. 2026-10-10 20:39 UTCEG score recompute
  55. 2026-10-10 20:39 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  56. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  57. 2026-10-10 16:16 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  58. 2026-10-10 11:55 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  59. 2026-10-10 07:34 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  60. 2026-10-10 03:13 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  61. 2026-10-09 22:52 UTCEG score recompute
  62. 2026-10-09 22:51 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  63. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  64. 2026-10-09 18:30 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  65. 2026-10-09 14:08 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  66. 2026-10-09 09:48 UTCEG score recompute
  67. 2026-10-09 09:47 UTCGHSA enrichmentGHSA-fmqx-854h-cfff · GitHub severity HIGH · GitHub CVSS 9.1
  68. 2026-10-09 05:26 UTCEG score recompute
  69. 2026-10-09 04:33 UTCEG score recomputeFirst assessed: 9.1 CRITICAL
  70. 2026-10-09 04:33 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-7826?
CVE-2026-7826 is a critical-severity vulnerability; its CVE record was published on October 9, 2026. A heap-based out-of-bounds read in the BufferSerializerIOv2_ReadBuffer function (src/serializers/serializer_io.c) in FalkorDB before 4.18.4 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…
When was the CVE record for CVE-2026-7826 published?
The CVE record for CVE-2026-7826 was published on October 9, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 15, 2026; the record at its source may have been updated since.
Is CVE-2026-7826 actively exploited?
CVE-2026-7826 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (37th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-7826?
CVE-2026-7826 has a CVSS base score of 9.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-7826?
A fix for CVE-2026-7826 is available: update to the fixed version the vendor names in its advisory. Fixed versions, as the CVE record's CNA (Securin) states them: "Upgrade FalkorDB to version 4.18.4 or later." The vendor advisories EchelonGraph has for CVE-2026-7826 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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