CVE-2026-8752

MEDIUMNVD 5.35.3
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 5.3 from GitHub Security Advisory published 2026-05-17. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Elevated
5.3EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 5.3Exploit: No code on recordExposed services: Not assessed

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

A weakness has been identified in h2oai h2o-3 up to 7402. This vulnerability affects the function exec of the file h2o-core/src/main/java/water/rapids/ast/prims/misc/AstSetProperty.java of the component Rapids setproperty Primitive Handler. Executing a manipulation can lead to improper access controls. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
55
EG Risk 55/100

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 (value × EchelonGraph’s weight)
Severity53% × 45%
The EG Score, 5.3 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.5%
EPSS %ILE
43rd
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

May 17, 2026

Last Modified

May 19, 2026

Advisory Details (1)

Auto-updated May 17, 2026
No fix on record yet.
Web page

H2O-3 Pre-Auth Logic Flaw in Rapids setproperty Lets Unauthenticated Attackers Enable POJO Import and Execute Arbitrary POJO Code

https://vulnplus-note.wetolink.com/share/pyVa0GWPuAZE

Vendor Advisories for CVE-2026-8752(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 30× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 96 of 202 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 4 repeat rows among the latest 100 are merged into the row they repeat. The 106 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  2. 2026-10-12 14:50 UTCEG score recompute
  3. 2026-10-11 19:16 UTCEG score recompute
  4. 2026-10-11 16:33 UTCEG score recompute
  5. 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  6. 2026-10-11 13:49 UTCEG score recompute
  7. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  8. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  9. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  10. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  11. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  12. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  13. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  14. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  15. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  16. 2026-09-30 03:40 UTCOSV refresh
  17. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  18. 2026-09-27 13:49 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  19. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  20. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  21. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  22. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  23. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  24. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  25. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 24th percentile
Show 71 more
  1. 2026-09-17 19:32 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  2. 2026-09-16 14:09 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  3. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  4. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  5. 2026-09-13 16:48 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  6. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  7. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  8. 2026-09-11 09:38 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  9. 2026-09-11 06:23 UTCOSV refresh
  10. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  11. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  12. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  13. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  14. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  15. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  16. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  17. 2026-08-30 19:18 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  18. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  19. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  20. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  21. 2026-08-26 14:47 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  22. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  23. 2026-08-24 14:18 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  24. 2026-08-23 17:20 UTCEG score recompute
  25. 2026-08-23 17:20 UTCGHSA enrichmentGHSA-cq43-78ch-3f5q · GitHub CVSS 5.3
  26. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  27. 2026-08-22 00:46 UTCEG score recompute
  28. 2026-08-22 00:46 UTCGHSA enrichmentGHSA-cq43-78ch-3f5q · GitHub CVSS 5.3
  29. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  30. 2026-08-20 22:56 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  31. 2026-08-20 19:13 UTCEG score recompute
  32. 2026-08-20 19:13 UTCGHSA enrichmentGHSA-cq43-78ch-3f5q · GitHub CVSS 5.3
  33. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  34. 2026-08-18 13:49 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  35. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  36. 2026-08-17 10:10 UTCEG score recompute
  37. 2026-08-17 10:10 UTCGHSA enrichmentGHSA-cq43-78ch-3f5q · GitHub CVSS 5.3
  38. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  39. 2026-08-16 03:42 UTCEG score recompute
  40. 2026-08-16 03:42 UTCGHSA enrichmentGHSA-cq43-78ch-3f5q · GitHub CVSS 5.3
  41. 2026-08-16 02:15 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  42. 2026-08-15 01:31 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  43. 2026-08-14 02:43 UTCEG score recompute
  44. 2026-08-14 02:43 UTCGHSA enrichmentGHSA-cq43-78ch-3f5q · GitHub CVSS 5.3
  45. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  46. 2026-08-13 02:31 UTCEG score recompute
  47. 2026-08-13 02:31 UTCGHSA enrichmentGHSA-cq43-78ch-3f5q · GitHub CVSS 5.3
  48. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  49. 2026-08-12 02:19 UTCEG score recompute
  50. 2026-08-12 02:19 UTCGHSA enrichmentGHSA-cq43-78ch-3f5q · GitHub CVSS 5.3
  51. 2026-08-11 13:43 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  52. 2026-08-11 02:07 UTCEG score recompute
  53. 2026-08-11 02:06 UTCGHSA enrichmentGHSA-cq43-78ch-3f5q · GitHub CVSS 5.3
  54. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  55. 2026-08-10 01:54 UTCEG score recompute
  56. 2026-08-10 01:54 UTCGHSA enrichmentGHSA-cq43-78ch-3f5q · GitHub CVSS 5.3
  57. 2026-08-09 13:47 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  58. 2026-08-09 01:42 UTCGHSA enrichmentGHSA-cq43-78ch-3f5q · GitHub CVSS 5.3
  59. 2026-08-07 21:53 UTCEG score recompute
  60. 2026-08-07 21:53 UTCGHSA enrichmentGHSA-cq43-78ch-3f5q · GitHub CVSS 5.3
  61. 2026-08-07 16:30 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  62. 2026-08-06 21:41 UTCEG score recompute
  63. 2026-08-06 21:41 UTCGHSA enrichmentGHSA-cq43-78ch-3f5q · GitHub CVSS 5.3
  64. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  65. 2026-08-05 21:27 UTCEG score recompute
  66. 2026-08-05 21:27 UTCGHSA enrichmentGHSA-cq43-78ch-3f5q · GitHub CVSS 5.3
  67. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  68. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  69. 2026-08-04 10:39 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  70. 2026-08-03 19:07 UTCEG score recompute
  71. 2026-08-03 19:07 UTCGHSA enrichmentGHSA-cq43-78ch-3f5q · GitHub CVSS 5.3

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8752?
CVE-2026-8752 is a medium-severity vulnerability; its CVE record was published on May 17, 2026. A weakness has been identified in h2oai h2o-3 up to 7402. This vulnerability affects the function exec of the file h2o-core/src/main/java/water/rapids/ast/prims/misc/AstSetProperty.java of the component Rapids setproperty Primitive Handler. Executing a manipulation can lead to improper access…
When was the CVE record for CVE-2026-8752 published?
The CVE record for CVE-2026-8752 was published on May 17, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of May 19, 2026; the record at its source may have been updated since.
Is CVE-2026-8752 actively exploited?
CVE-2026-8752 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (43rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-8752?
CVE-2026-8752 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-8752?
No fix for CVE-2026-8752 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-8752 are linked in the Vendor Advisories panel on this page.

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