CVE-2026-23537

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreHIGH 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
9.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.1Exploit: NoneExposed: 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(high)
EPSS
43.0%
KEV
Not listed

Published

July 1, 2026

Last Modified

July 2, 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 81× in last 7d / 81× 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.

  1. 2026-07-07 04:50 UTCEG score recompute
  2. 2026-07-07 04:50 UTCGHSA enrichment
  3. 2026-07-07 01:10 UTCEG score recompute
  4. 2026-07-07 01:10 UTCGHSA enrichment
  5. 2026-07-06 21:30 UTCEG score recompute
  6. 2026-07-06 21:30 UTCGHSA enrichment
  7. 2026-07-06 17:50 UTCEG score recompute
  8. 2026-07-06 17:49 UTCGHSA enrichment
  9. 2026-07-06 16:27 UTCEPSS rescore
  10. 2026-07-06 16:27 UTCEPSS rescore
  11. 2026-07-06 14:05 UTCEG score recompute
  12. 2026-07-06 14:05 UTCGHSA enrichment
  13. 2026-07-06 10:25 UTCEG score recompute
  14. 2026-07-06 10:24 UTCGHSA enrichment
  15. 2026-07-06 06:41 UTCEG score recompute
  16. 2026-07-06 06:41 UTCGHSA enrichment
  17. 2026-07-06 03:00 UTCEG score recompute
  18. 2026-07-06 03:00 UTCGHSA enrichment
  19. 2026-07-06 02:23 UTCEPSS rescore
  20. 2026-07-06 02:23 UTCEPSS rescore
  21. 2026-07-05 23:19 UTCEG score recompute
  22. 2026-07-05 23:19 UTCGHSA enrichment
  23. 2026-07-05 19:38 UTCEG score recompute
  24. 2026-07-05 19:38 UTCGHSA enrichment
  25. 2026-07-05 15:57 UTCEG score recompute
Show 56 more
  1. 2026-07-05 15:57 UTCGHSA enrichment
  2. 2026-07-05 12:17 UTCEG score recompute
  3. 2026-07-05 12:17 UTCGHSA enrichment
  4. 2026-07-05 08:36 UTCEG score recompute
  5. 2026-07-05 08:36 UTCGHSA enrichment
  6. 2026-07-05 04:55 UTCEG score recompute
  7. 2026-07-05 04:55 UTCGHSA enrichment
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-05 01:12 UTCEG score recompute
  10. 2026-07-05 01:12 UTCGHSA enrichment
  11. 2026-07-04 21:28 UTCEG score recompute
  12. 2026-07-04 21:28 UTCGHSA enrichment
  13. 2026-07-04 17:48 UTCEG score recompute
  14. 2026-07-04 17:47 UTCGHSA enrichment
  15. 2026-07-04 14:05 UTCEG score recompute
  16. 2026-07-04 14:05 UTCGHSA enrichment
  17. 2026-07-04 10:24 UTCEG score recompute
  18. 2026-07-04 10:24 UTCGHSA enrichment
  19. 2026-07-04 06:44 UTCEG score recompute
  20. 2026-07-04 06:44 UTCGHSA enrichment
  21. 2026-07-04 06:31 UTCEPSS rescore
  22. 2026-07-04 06:31 UTCEPSS rescore
  23. 2026-07-04 03:02 UTCEG score recompute
  24. 2026-07-04 03:01 UTCGHSA enrichment
  25. 2026-07-03 23:20 UTCEG score recompute
  26. 2026-07-03 23:20 UTCGHSA enrichment
  27. 2026-07-03 19:39 UTCEG score recompute
  28. 2026-07-03 19:39 UTCGHSA enrichment
  29. 2026-07-03 15:59 UTCEG score recompute
  30. 2026-07-03 15:58 UTCGHSA enrichment
  31. 2026-07-03 12:17 UTCEG score recompute
  32. 2026-07-03 12:17 UTCGHSA enrichment
  33. 2026-07-03 08:33 UTCEG score recompute
  34. 2026-07-03 08:33 UTCGHSA enrichment
  35. 2026-07-03 04:52 UTCEG score recompute
  36. 2026-07-03 04:52 UTCGHSA enrichment
  37. 2026-07-03 01:10 UTCEG score recompute
  38. 2026-07-03 01:09 UTCGHSA enrichment
  39. 2026-07-02 21:29 UTCEG score recompute
  40. 2026-07-02 21:28 UTCGHSA enrichment
  41. 2026-07-02 17:47 UTCEG score recompute
  42. 2026-07-02 17:47 UTCGHSA enrichment
  43. 2026-07-02 14:07 UTCEG score recompute
  44. 2026-07-02 14:06 UTCGHSA enrichment
  45. 2026-07-02 10:25 UTCEG score recompute
  46. 2026-07-02 10:25 UTCGHSA enrichment
  47. 2026-07-02 06:45 UTCEG score recompute
  48. 2026-07-02 06:45 UTCGHSA enrichment
  49. 2026-07-02 03:04 UTCEG score recompute
  50. 2026-07-02 03:04 UTCGHSA enrichment
  51. 2026-07-01 23:23 UTCEG score recompute
  52. 2026-07-01 23:23 UTCGHSA enrichment
  53. 2026-07-01 19:43 UTCEG score recompute
  54. 2026-07-01 19:43 UTCGHSA enrichment
  55. 2026-07-01 16:02 UTCEG score recompute
  56. 2026-07-01 16:02 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 2, 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 43.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-23537

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