CVE-2026-18947

HIGHPre-NVD 8.58.5—
EchelonGraph scoreMEDIUM confidence

Score 8.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-10. A secondary CVSS source baseline 8.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.5EG
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: 8.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in Feast. An authorization bypass vulnerability exists in the /materialize and /materialize-incremental endpoints. By sending a specially crafted request that omits the feature_views field, an attacker can bypass intended permission checks. This allows an unauthenticated remote attacker, or any authenticated user, to trigger a full re-materialization of all feature views. The consequence is a Denial of Service (DoS) due to data corruption and significant resource consumption across all tenants.

CVSS v3
8.5
EG Score
8.5HIGHmedium confidence
EG Risk
38
EG Risk 38/100CISA 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
Severity85% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
46th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). 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

August 10, 2026

Last Modified

August 19, 2026

Advisory Details (2)

Auto-updated Aug 10, 2026
Patch available. Sources: redhat.
redhat

2511164 – (CVE-2026-18947) CVE-2026-18947 feast: Feast: Authorization bypass in /materialize endpoints enables DoS via unauthorized full re-materialization

https://bugzilla.redhat.com/show_bug.cgi?id=2511164
redhat Patch Available

CVE-2026-18947 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-18947

Vendor Advisories for CVE-2026-18947(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 / EcosystemFix (by version range) / PatchReleasedSource
redhatrhoai/odh-feature-server-rhel9:17861100332026-08-11redhat
redhatrhoai/odh-feature-server-rhel9:17861100512026-08-11redhat

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 26× in last 7d / 132× 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 290 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-18947?
CVE-2026-18947 is a high vulnerability published on August 10, 2026. A flaw was found in Feast. An authorization bypass vulnerability exists in the /materialize and /materialize-incremental endpoints. By sending a specially crafted request that omits the feature_views field, an attacker can bypass intended permission checks. This allows an unauthenticated remote…
When was CVE-2026-18947 disclosed?
CVE-2026-18947 was first published on August 10, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18947 actively exploited?
CVE-2026-18947 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (46th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-18947?
CVE-2026-18947 has a CVSS base score of 8.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-18947?
A fix for CVE-2026-18947 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-18947 are linked in the Vendor Advisories panel on this page.

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