CVE-2026-23537

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-01. a secondary CVSS source baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.1Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A vulnerability has been identified in the Feast Feature Server’s /save-document endpoint that allows an unauthenticated remote attacker to write arbitrary JSON files to the server's filesystem. Although the system attempts to restrict file locations, these protections can be bypassed, enabling an attacker to overwrite vital application configurations or startup scripts. Because this flaw requires no credentials or special privileges, any attacker with network access to the server can potentially compromise the integrity of the system. This could lead to unauthorized system modifications, denial of service through disk exhaustion, or potential remote code execution.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
56(Track)
EG Risk 56/100SSVC: 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
Severity91% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
47%
KEV
Not listed

Published

July 1, 2026

Last Modified

July 15, 2026

Advisory Details (3)

Auto-updated Jul 1, 2026
Patch available. Sources: redhat, github_pr.
github_pr

feat: Feast updates for simplicity

Fix merged in red-hat-data-services/feast PR #192 on 2026-01-16 — awaiting tagged release

https://github.com/red-hat-data-services/feast/pull/192
redhat

2429304 – (CVE-2026-23537) CVE-2026-23537 feast: Unauthenticated Arbitrary File Write

https://bugzilla.redhat.com/show_bug.cgi?id=2429304
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-23537

Vendor Advisories for CVE-2026-23537(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 46× in last 7d / 184× 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 186 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-23537?
CVE-2026-23537 is a critical vulnerability published on July 1, 2026. A vulnerability has been identified in the Feast Feature Server’s /save-document endpoint that allows an unauthenticated remote attacker to write arbitrary JSON files to the server's filesystem. Although the system attempts to restrict file locations, these protections can be bypassed, enabling an…
When was CVE-2026-23537 disclosed?
CVE-2026-23537 was first published in the National Vulnerability Database on July 1, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-23537 actively exploited?
CVE-2026-23537 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 52.6% of all scored CVEs.
What is the CVSS score of CVE-2026-23537?
CVE-2026-23537 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-23537?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23537, 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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