CVE-2026-18948

CRITICALPre-NVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

Score 9.9 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-10. a secondary CVSS source baseline 9.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.9Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in Feast. The system improperly deserializes user-defined functions (UDFs) stored in its registry, which are serialized using the 'dill' library. This allows a remote attacker to store a malicious UDF, leading to unauthenticated arbitrary code execution on the feature server in default configurations. An authenticated attacker can also achieve arbitrary code execution on the registry server by bypassing authorization checks during deserialization. This vulnerability can result in cross-tenant data access and lateral movement within the system.

CVSS v3
9.9
EG Score
9.9(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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
Severity99% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
53%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 27, 2026

Advisory Details (6)

Auto-updated Sep 17, 2026
Patch available. Sources: redhat.
redhat

2511167 – (CVE-2026-18948) CVE-2026-18948 feast: Feast: Unsafe dill deserialization of registry-stored UDFs — RCE on feature server and registry server

https://bugzilla.redhat.com/show_bug.cgi?id=2511167
redhat Patch Available

CVE-2026-18948 - 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-2026-18948
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:60520
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:53263
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:53262
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:53261

Vendor Advisories for CVE-2026-18948(5)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrhoai/odh-feature-server-rhel9:17870680652026-08-27redhat
redhatrhoai/odh-feature-server-rhel9:17861072782026-08-11redhat
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 80× in last 7d / 349× 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 502 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-18948?
CVE-2026-18948 is a critical vulnerability published on August 10, 2026. A flaw was found in Feast. The system improperly deserializes user-defined functions (UDFs) stored in its registry, which are serialized using the 'dill' library. This allows a remote attacker to store a malicious UDF, leading to unauthenticated arbitrary code execution on the feature server in…
When was CVE-2026-18948 disclosed?
CVE-2026-18948 was first published in the National Vulnerability Database on August 10, 2026, with the most recent update on August 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18948 actively exploited?
CVE-2026-18948 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 46.8% of all scored CVEs.
What is the CVSS score of CVE-2026-18948?
CVE-2026-18948 has a CVSS v3 base score of 9.9 (NVD).
How do I remediate CVE-2026-18948?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18948, 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.

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