CVE-2026-82631

LOWPre-NVD 2.22.2
EchelonGraph scoreMEDIUM confidence

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

Score 2.2 from GitHub Security Advisory (severity: LOW) published 2026-08-31. A secondary CVSS source baseline 2.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Elevated

Also known asEUVD-2026-68393 (ENISA EUVD) · GHSA-vxq6-76gw-j6q5 (GitHub Security Advisories)Source: ENISA EUVD

2.2EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 2.2Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

A security flaw has been discovered in valkey-io valkey 9.1.0. The affected element is the function handleClientsBlockedOnKey of the file src/blocked.c of the component Blocked-on-keys Subsystem. The manipulation results in use after free. The attack may be performed from remote. A high complexity level is associated with this attack. The exploitability is described as difficult. The exploit has been released to the public and may be used for attacks. The patch is identified as b2fb0e13f5b4c8c2fb63dcfc2c37a067a0d6d20b. Applying a patch is advised to resolve this issue.

CVSS v3
2.2
EG Score
2.2LOWmedium confidence
EG Risk
26
EG Risk 26/100

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)
Severity22% × 45%
Impact severity (EG Severity): CVSS 2.2 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (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.
EPSS PROB
0.4%
EPSS %ILE
30th
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 (2.2): severity, escalated by confirmed exploitation. This CVE's 2.2 is its impact severity (EG Severity), not escalated.

EG Severity
2.2 LOWCVSS-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 2026-10-29). 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; Track* at high (mission-essential systems).CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade 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; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (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)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (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

August 31, 2026

Last Modified

August 31, 2026

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatvalkey-main-9.0.6-0.1.hum12026-09-01redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(6 across 3 ecosystems)
Debian:14(3)
PackageVulnerable rangeFix by version rangeDependents
redict7.3.0+ds-1 ... 7.3.6+ds-3 (16 versions)
  • every version on: no fix on record
—
redis5:8.0.2-3 ... 5:8.6.3-1 (10 versions)
  • every version on: no fix on record
—
valkey8.1.1+dfsg1-3, 8.1.4+dfsg1-1, 8.1.4+dfsg1-2, 9.1.1-1
  • every version up to 9.1.2-1: fixed in 9.1.2-1
—
Debian:13(2)
PackageVulnerable rangeFix by version rangeDependents
redis5:8.0.2-3 ... 5:8.6.3-1 (13 versions)
  • every version on: no fix on record
—
valkey8.1.1+dfsg1-3, 8.1.1+dfsg1-3+deb13u1, 8.1.1+dfsg1-3+deb13u2
  • every version up to 8.1.1+dfsg1-3+deb13u3: fixed in 8.1.1+dfsg1-3+deb13u3
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
redis5:7.0.11-1 ... 5:8.6.3-1 (49 versions)
  • every version on: no fix on record
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 32× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 129 rows on record for this CVE, as 99 entries (1 repeat merged).

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 29 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 16:57 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  2. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  3. 2026-11-11 16:41 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  4. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  5. 2026-11-09 16:36 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  6. 2026-11-08 16:41 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  7. 2026-11-07 16:40 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  8. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  9. 2026-11-04 16:37 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  10. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  11. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  12. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  13. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  14. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  15. 2026-10-29 17:43 UTCEchelonGraph re-scored
  16. 2026-10-29 17:43 UTCVendor advisory
  17. 2026-10-29 17:43 UTCGHSA enrichmentGHSA-vxq6-76gw-j6q5 · GitHub severity LOW · GitHub CVSS 2.2
  18. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  19. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  20. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  21. 2026-10-27 05:25 UTCOSV refresh
  22. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  23. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  24. 2026-10-25 13:57 UTCEchelonGraph re-scored
  25. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
Show 74 more
  1. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  2. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  3. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  4. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  5. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  6. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  7. 2026-10-18 03:08 UTCEchelonGraph re-scored
  8. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  9. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  10. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  11. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  12. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  13. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  14. 2026-10-12 14:55 UTCEchelonGraph re-scored
  15. 2026-10-11 19:19 UTCEchelonGraph re-scored
  16. 2026-10-11 16:36 UTCEchelonGraph re-scored
  17. 2026-10-11 13:54 UTCEchelonGraph re-scored
  18. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  19. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  20. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  21. 2026-10-09 06:45 UTCEchelonGraph re-scored
  22. 2026-10-09 06:45 UTCVendor advisory
  23. 2026-10-09 06:45 UTCGHSA enrichmentGHSA-vxq6-76gw-j6q5 · GitHub severity LOW · GitHub CVSS 2.2
  24. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  25. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  26. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  27. 2026-10-06 13:01 UTCEchelonGraph re-scored
  28. 2026-10-06 13:01 UTCVendor advisory
  29. 2026-10-06 13:01 UTCGHSA enrichmentGHSA-vxq6-76gw-j6q5 · GitHub severity LOW · GitHub CVSS 2.2
  30. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  31. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  32. 2026-10-03 19:18 UTCEchelonGraph re-scored
  33. 2026-10-03 19:18 UTCVendor advisory
  34. 2026-10-03 19:18 UTCGHSA enrichmentGHSA-vxq6-76gw-j6q5 · GitHub severity LOW · GitHub CVSS 2.2
  35. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  36. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  37. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  38. 2026-10-01 00:57 UTCEchelonGraph re-scored
  39. 2026-10-01 00:57 UTCVendor advisory
  40. 2026-10-01 00:57 UTCGHSA enrichmentGHSA-vxq6-76gw-j6q5 · GitHub severity LOW · GitHub CVSS 2.2
  41. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  42. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  43. 2026-09-28 06:33 UTCEchelonGraph re-scored
  44. 2026-09-28 06:33 UTCVendor advisory
  45. 2026-09-28 06:33 UTCGHSA enrichmentGHSA-vxq6-76gw-j6q5 · GitHub severity LOW · GitHub CVSS 2.2
  46. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  47. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  48. 2026-09-25 12:50 UTCEchelonGraph re-scored
  49. 2026-09-25 12:50 UTCVendor advisory
  50. 2026-09-25 12:50 UTCGHSA enrichmentGHSA-vxq6-76gw-j6q5 · GitHub severity LOW · GitHub CVSS 2.2
  51. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  52. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  53. 2026-09-22 19:06 UTCEchelonGraph re-scored
  54. 2026-09-22 19:06 UTCVendor advisory
  55. 2026-09-22 19:06 UTCGHSA enrichmentGHSA-vxq6-76gw-j6q5 · GitHub severity LOW · GitHub CVSS 2.2
  56. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  57. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  58. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  59. 2026-09-20 01:23 UTCEchelonGraph re-scored
  60. 2026-09-20 01:23 UTCVendor advisory
  61. 2026-09-20 01:23 UTCGHSA enrichmentGHSA-vxq6-76gw-j6q5 · GitHub severity LOW · GitHub CVSS 2.2
  62. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  63. 2026-09-17 07:40 UTCEchelonGraph re-scored
  64. 2026-09-17 07:40 UTCVendor advisory
  65. 2026-09-17 07:40 UTCGHSA enrichmentGHSA-vxq6-76gw-j6q5 · GitHub severity LOW · GitHub CVSS 2.2
  66. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  67. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  68. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  69. 2026-09-14 13:54 UTCEchelonGraph re-scored
  70. 2026-09-14 13:54 UTCVendor advisory
  71. 2026-09-14 13:54 UTCGHSA enrichmentGHSA-vxq6-76gw-j6q5 · GitHub severity LOW · GitHub CVSS 2.2
  72. 2026-09-11 20:11 UTCEchelonGraph re-scored
  73. 2026-09-11 20:11 UTCVendor advisory
  74. 2026-09-11 20:11 UTCGHSA enrichmentGHSA-vxq6-76gw-j6q5 · GitHub severity LOW · GitHub CVSS 2.2

Frequently asked(5)

What is CVE-2026-82631?
CVE-2026-82631 is a low-severity vulnerability; its CVE record was published on August 31, 2026. A security flaw has been discovered in valkey-io valkey 9.1.0. The affected element is the function handleClientsBlockedOnKey of the file src/blocked.c of the component Blocked-on-keys Subsystem. The manipulation results in use after free. The attack may be performed from remote. A high complexity…
When was the CVE record for CVE-2026-82631 published?
The CVE record for CVE-2026-82631 was published on August 31, 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 August 31, 2026; the record at its source may have been updated since.
Is CVE-2026-82631 actively exploited?
CVE-2026-82631 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (30th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-82631?
CVE-2026-82631 has a CVSS base score of 2.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-82631?
A fix for CVE-2026-82631 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-82631 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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