CVE-2026-23631

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 74% 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, nvd
Elevated
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 8.1Exploit: NoneExposed: 0

A fix is available — apply it.

Redis is an in-memory data structure store. In all versions of redis-server with Lua scripting, an authenticated attacker can exploit the master-replica synchronization mechanism to trigger a use-after-free on replicas where replica-read-only is disabled or can be disabled, which may lead to remote code execution. A workaround is to prevent users from executing Lua scripts or avoid using replicas where replica-read-only is disabled. This is patched in version 8.6.3.

CVSS v3
8.1
EG Score
8.1(medium)
EPSS
75.6%
KEV
Not listed

Published

May 5, 2026

Last Modified

June 30, 2026

Advisory Details (2)

Auto-updated May 5, 2026
Patch available. Sources: github.
github Patch Available

Lua Use-After-Free may lead to remote code execution · Advisory · redis/redis · GitHub

https://github.com/redis/redis/security/advisories/GHSA-8ghh-qpmp-7826
generic

Release 8.6.3 · redis/redis · GitHub

https://github.com/redis/redis/releases/tag/8.6.3

Vendor Advisories for CVE-2026-23631(7)

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

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatredis:7-9080020260521083756.92026-06-11redhat
redhatvalkey-0:8.0.9-1.el10_22026-06-11redhat

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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 69× 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.

Showing the most recent 100 of 123 total refreshes for this CVE.

  1. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 02:23 UTCEPSS rescore
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-05 02:30 UTCEPSS rescore
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  8. 2026-07-01 15:06 UTCEPSS rescore
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  10. 2026-06-30 23:22 UTCEPSS rescore
  11. 2026-06-30 23:22 UTCEPSS rescore
  12. 2026-06-29 14:06 UTCEPSS rescore
  13. 2026-06-28 14:07 UTCEPSS rescore
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  15. 2026-06-28 04:56 UTCEPSS rescore
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  17. 2026-06-27 03:08 UTCEPSS rescore
  18. 2026-06-25 13:49 UTCEPSS rescore
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  20. 2026-06-24 14:05 UTCEPSS rescore
  21. 2026-06-24 14:05 UTCEPSS rescore
  22. 2026-06-23 21:33 UTCEPSS rescore
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  24. 2026-06-22 14:25 UTCEPSS rescore
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  1. 2026-06-21 14:56 UTCEPSS rescore
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  3. 2026-06-21 01:59 UTCEPSS rescore
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  5. 2026-06-19 19:25 UTCEPSS rescore
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  7. 2026-06-18 17:52 UTCEPSS rescore
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  9. 2026-06-17 17:53 UTCEPSS rescore
  10. 2026-06-16 17:52 UTCEPSS rescore
  11. 2026-06-15 17:48 UTCEPSS rescore
  12. 2026-06-15 06:26 UTCEG score recompute
  13. 2026-06-15 06:26 UTCVendor advisory
  14. 2026-06-14 23:18 UTCEPSS rescore
  15. 2026-06-14 19:03 UTCEG score recompute
  16. 2026-06-14 19:03 UTCVendor advisory
  17. 2026-06-14 07:51 UTCEG score recompute
  18. 2026-06-14 07:51 UTCVendor advisory
  19. 2026-06-13 23:00 UTCEPSS rescore
  20. 2026-06-13 02:03 UTCEG score recompute
  21. 2026-06-13 02:03 UTCVendor advisory
  22. 2026-06-12 23:12 UTCEPSS rescore
  23. 2026-06-12 23:12 UTCEPSS rescore
  24. 2026-06-12 07:21 UTCEG score recompute
  25. 2026-06-12 07:21 UTCVendor advisory
  26. 2026-06-11 20:10 UTCEG score recompute
  27. 2026-06-11 20:10 UTCVendor advisory
  28. 2026-06-11 14:00 UTCEPSS rescore
  29. 2026-06-11 08:57 UTCEG score recompute
  30. 2026-06-10 22:18 UTCEPSS rescore
  31. 2026-06-10 22:18 UTCEPSS rescore
  32. 2026-06-10 21:30 UTCEG score recompute
  33. 2026-06-10 13:22 UTCEPSS rescore
  34. 2026-06-10 10:20 UTCEG score recompute
  35. 2026-06-09 23:09 UTCEG score recompute
  36. 2026-06-09 09:39 UTCEG score recompute
  37. 2026-06-08 22:21 UTCEG score recompute
  38. 2026-06-08 14:17 UTCEPSS rescore
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  40. 2026-06-08 10:12 UTCEG score recompute
  41. 2026-06-07 23:02 UTCEG score recompute
  42. 2026-06-07 15:25 UTCEPSS rescore
  43. 2026-06-07 15:24 UTCEPSS rescore
  44. 2026-06-07 11:52 UTCEG score recompute
  45. 2026-06-07 00:42 UTCEG score recompute
  46. 2026-06-06 13:47 UTCEPSS rescore
  47. 2026-06-06 13:47 UTCEPSS rescore
  48. 2026-06-06 13:47 UTCEPSS rescore
  49. 2026-06-06 13:31 UTCEG score recompute
  50. 2026-06-06 02:21 UTCEG score recompute
  51. 2026-06-05 22:47 UTCEPSS rescore
  52. 2026-06-05 14:27 UTCEG score recompute
  53. 2026-06-05 06:10 UTCEPSS rescore
  54. 2026-06-05 06:10 UTCEPSS rescore
  55. 2026-06-05 03:17 UTCEG score recompute
  56. 2026-06-04 16:07 UTCEG score recompute
  57. 2026-06-04 13:12 UTCEPSS rescore
  58. 2026-06-04 13:12 UTCEPSS rescore
  59. 2026-06-04 13:12 UTCEPSS rescore
  60. 2026-06-04 04:56 UTCEG score recompute
  61. 2026-06-03 17:45 UTCEG score recompute
  62. 2026-06-03 06:28 UTCEG score recompute
  63. 2026-06-02 20:13 UTCEPSS rescore
  64. 2026-06-02 20:13 UTCEPSS rescore
  65. 2026-06-02 19:18 UTCEG score recompute
  66. 2026-06-02 08:08 UTCEG score recompute
  67. 2026-06-01 20:58 UTCEG score recompute
  68. 2026-06-01 13:51 UTCEPSS rescore
  69. 2026-06-01 13:51 UTCEPSS rescore
  70. 2026-06-01 13:51 UTCEPSS rescore
  71. 2026-06-01 09:48 UTCEG score recompute
  72. 2026-05-31 00:16 UTCEPSS rescore
  73. 2026-05-31 00:16 UTCEPSS rescore
  74. 2026-05-31 00:16 UTCEPSS rescore
  75. 2026-05-29 13:44 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCyoyosh/DarkReplica
    First seen May 7, 2026

    CVE-2026-23631 (DarkReplica) Redis Exploit

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-23631?
CVE-2026-23631 is a high vulnerability published on May 5, 2026. Redis is an in-memory data structure store. In all versions of redis-server with Lua scripting, an authenticated attacker can exploit the master-replica synchronization mechanism to trigger a use-after-free on replicas where replica-read-only is disabled or can be disabled, which may lead to remote…
When was CVE-2026-23631 disclosed?
CVE-2026-23631 was first published in the National Vulnerability Database on May 5, 2026, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-23631 actively exploited?
CVE-2026-23631 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 75.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-23631?
CVE-2026-23631 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-23631?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23631, 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

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