CVE-2026-47784

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-05-20. NVD baseline CVSS 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.1Exploit: None knownExposed: 0

A fix is available — apply it.

In memcached before 1.6.42, password data for SASL password database authentication has a timing side channel because memcmp is used by sasl_server_userdb_checkpass.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

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
Severity81% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

May 20, 2026

Last Modified

July 24, 2026

Advisory Details (3)

Auto-updated May 20, 2026
No patch confirmed yet.
generic

ReleaseNotes1642 · memcached/memcached Wiki · GitHub

https://github.com/memcached/memcached/wiki/ReleaseNotes1642
generic

Comparing 1.6.41...1.6.42 · memcached/memcached · GitHub

https://github.com/memcached/memcached/compare/1.6.41...1.6.42
generic

Fix timing side-channel in SASL password database authentication · memcached/memcached@d13f282 · GitHub

https://github.com/memcached/memcached/commit/d13f282b4bce33a9c33b8a1bbf07f12114160fed

Vendor Advisories for CVE-2026-47784(3)

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
ubuntumemcached (1.6.40-1ubuntu0.1) @ resolute2026-07-26ubuntu
redhatmemcached-main-1.6.42-0.1.hum12026-06-04redhat

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.

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 11× in last 7d / 42× 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 169 total refreshes for this CVE.

  1. 2026-07-26 14:54 UTCEPSS rescore
  2. 2026-07-26 08:16 UTCEG score recompute
  3. 2026-07-26 08:16 UTCVendor advisory
  4. 2026-07-26 08:16 UTCGHSA enrichment
  5. 2026-07-25 14:18 UTCEPSS rescore
  6. 2026-07-24 14:18 UTCEPSS rescore
  7. 2026-07-23 14:18 UTCEPSS rescore
  8. 2026-07-23 03:17 UTCEG score recompute
  9. 2026-07-22 14:08 UTCEPSS rescore
  10. 2026-07-21 15:24 UTCEPSS rescore
  11. 2026-07-20 17:08 UTCEPSS rescore
  12. 2026-07-19 14:31 UTCEPSS rescore
  13. 2026-07-19 02:29 UTCEPSS rescore
  14. 2026-07-18 10:04 UTCEPSS rescore
  15. 2026-07-17 22:59 UTCOSV refresh
  16. 2026-07-16 17:03 UTCEPSS rescore
  17. 2026-07-15 16:57 UTCEPSS rescore
  18. 2026-07-15 02:00 UTCEPSS rescore
  19. 2026-07-13 22:30 UTCEPSS rescore
  20. 2026-07-13 06:13 UTCEPSS rescore
  21. 2026-07-12 05:46 UTCEPSS rescore
  22. 2026-07-11 08:27 UTCEPSS rescore
  23. 2026-07-09 19:10 UTCEPSS rescore
  24. 2026-07-08 15:16 UTCEPSS rescore
  25. 2026-07-07 13:46 UTCEPSS rescore
Show 75 more
  1. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 02:23 UTCEPSS rescore
  3. 2026-07-05 02:30 UTCEPSS rescore
  4. 2026-07-04 06:31 UTCEPSS rescore
  5. 2026-07-01 15:07 UTCEPSS rescore
  6. 2026-06-30 23:22 UTCEPSS rescore
  7. 2026-06-29 20:30 UTCVendor advisory
  8. 2026-06-29 20:30 UTCGHSA enrichment
  9. 2026-06-29 14:06 UTCEPSS rescore
  10. 2026-06-29 14:06 UTCEPSS rescore
  11. 2026-06-28 14:07 UTCEPSS rescore
  12. 2026-06-28 09:21 UTCVendor advisory
  13. 2026-06-28 09:21 UTCGHSA enrichment
  14. 2026-06-28 04:56 UTCEPSS rescore
  15. 2026-06-28 04:56 UTCEPSS rescore
  16. 2026-06-27 20:48 UTCVendor advisory
  17. 2026-06-27 20:48 UTCGHSA enrichment
  18. 2026-06-27 08:10 UTCVendor advisory
  19. 2026-06-27 08:10 UTCGHSA enrichment
  20. 2026-06-27 03:08 UTCEPSS rescore
  21. 2026-06-26 19:36 UTCVendor advisory
  22. 2026-06-26 19:36 UTCGHSA enrichment
  23. 2026-06-26 04:53 UTCVendor advisory
  24. 2026-06-26 04:53 UTCGHSA enrichment
  25. 2026-06-25 16:18 UTCVendor advisory
  26. 2026-06-25 16:17 UTCGHSA enrichment
  27. 2026-06-25 13:49 UTCEPSS rescore
  28. 2026-06-24 14:05 UTCEPSS rescore
  29. 2026-06-23 21:33 UTCEPSS rescore
  30. 2026-06-23 21:33 UTCEPSS rescore
  31. 2026-06-22 14:25 UTCEPSS rescore
  32. 2026-06-22 14:25 UTCEPSS rescore
  33. 2026-06-21 14:56 UTCEPSS rescore
  34. 2026-06-21 14:56 UTCEPSS rescore
  35. 2026-06-21 01:59 UTCEPSS rescore
  36. 2026-06-21 01:59 UTCEPSS rescore
  37. 2026-06-19 19:26 UTCEPSS rescore
  38. 2026-06-19 19:26 UTCEPSS rescore
  39. 2026-06-18 17:52 UTCEPSS rescore
  40. 2026-06-18 17:52 UTCEPSS rescore
  41. 2026-06-18 00:03 UTCVendor advisory
  42. 2026-06-18 00:03 UTCGHSA enrichment
  43. 2026-06-17 17:53 UTCEPSS rescore
  44. 2026-06-17 11:27 UTCVendor advisory
  45. 2026-06-17 11:27 UTCGHSA enrichment
  46. 2026-06-16 20:17 UTCVendor advisory
  47. 2026-06-16 20:17 UTCGHSA enrichment
  48. 2026-06-16 17:53 UTCEPSS rescore
  49. 2026-06-16 04:53 UTCVendor advisory
  50. 2026-06-16 04:53 UTCGHSA enrichment
  51. 2026-06-15 17:49 UTCEPSS rescore
  52. 2026-06-15 17:49 UTCEPSS rescore
  53. 2026-06-15 15:52 UTCVendor advisory
  54. 2026-06-15 15:52 UTCGHSA enrichment
  55. 2026-06-14 23:40 UTCVendor advisory
  56. 2026-06-14 23:40 UTCGHSA enrichment
  57. 2026-06-14 23:18 UTCEPSS rescore
  58. 2026-06-14 11:05 UTCVendor advisory
  59. 2026-06-14 11:05 UTCGHSA enrichment
  60. 2026-06-13 23:00 UTCEPSS rescore
  61. 2026-06-13 22:31 UTCVendor advisory
  62. 2026-06-13 22:31 UTCGHSA enrichment
  63. 2026-06-13 04:23 UTCVendor advisory
  64. 2026-06-13 04:23 UTCGHSA enrichment
  65. 2026-06-12 23:12 UTCEPSS rescore
  66. 2026-06-12 23:12 UTCEPSS rescore
  67. 2026-06-12 15:48 UTCVendor advisory
  68. 2026-06-12 15:48 UTCGHSA enrichment
  69. 2026-06-12 02:50 UTCVendor advisory
  70. 2026-06-12 02:50 UTCGHSA enrichment
  71. 2026-06-11 14:16 UTCVendor advisory
  72. 2026-06-11 14:16 UTCGHSA enrichment
  73. 2026-06-11 14:00 UTCEPSS rescore
  74. 2026-06-11 01:42 UTCVendor advisory
  75. 2026-06-11 01:42 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-47784?
CVE-2026-47784 is a high vulnerability published on May 20, 2026. In memcached before 1.6.42, password data for SASL password database authentication has a timing side channel because memcmp is used by saslserveruserdb_checkpass.
When was CVE-2026-47784 disclosed?
CVE-2026-47784 was first published in the National Vulnerability Database on May 20, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-47784 actively exploited?
CVE-2026-47784 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 57.3% of all scored CVEs.
What is the CVSS score of CVE-2026-47784?
CVE-2026-47784 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-47784?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-47784, 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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