CVE-2026-34282

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-04-21. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.5Exploit: NoneExposed: 0

A fix is available — apply it.

Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Networking). Supported versions that are affected are Oracle Java SE: 8u481-perf, 11.0.30, 17.0.18, 21.0.10, 25.0.2, 26; Oracle GraalVM for JDK: 17.0.18 and 21.0.10; Oracle GraalVM Enterprise Edition: 21.3.17. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
46.3%
KEV
Not listed

Published

April 21, 2026

Last Modified

July 15, 2026

References (19)

Vendor Advisories for CVE-2026-34282(18)

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

Patch Availability(25)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuopenjdk-25-crac-testsupport (25.0.3+9-0ubuntu1~25.10.1) @ questing2026-06-15ubuntu
ubuntuopenjdk-17-source (17.0.19+10-1~22.04.2) @ jammy2026-06-15ubuntu
ubuntuopenjdk-26-testsupport (26.0.1+8-2~26.04.2) @ resolute2026-06-15ubuntu
ubuntuopenjdk-25-testsupport (25.0.3+9-2~26.04.2) @ resolute2026-06-15ubuntu
ubuntuopenjdk-21-testsupport (21.0.11+10-1~24.04.2) @ noble2026-06-15ubuntu
ubuntuopenjdk-11-source (11.0.31+11-1ubuntu1~18.04.2) @ bionic2026-06-15ubuntu
ubuntuopenjdk-17-crac-source (17.0.19+10-0ubuntu1~26.04.1) @ resolute2026-06-15ubuntu
ubuntuopenjdk-21-crac-testsupport (21.0.11+10-0ubuntu1~26.04.1) @ resolute2026-06-15ubuntu
redhatjava-21-ibm-semeru-certified-jdk-1:21.0.11.0.10-2.el10_12026-06-01redhat
redhatjava-25-openjdk-windows2026-04-30redhat
redhatjava-25-openjdk-portable-main-25.0.3.0.9-1.hum12026-04-29redhat
redhatjava-21-openjdk-main-21.0.11.0.10-1.hum12026-04-29redhat
redhatjava-25-openjdk-main-25.0.3.0.9-1.hum12026-04-29redhat
redhatjava-21-openjdk-portable-main-21.0.11.0.10-2.hum12026-04-28redhat
redhatjava-17-openjdk-1:17.0.19.0.10-1.el92026-04-24redhat
redhatjava-21-openjdk-1:21.0.11.0.10-1.el92026-04-24redhat
redhatjava-17-openjdk-windows2026-04-23redhat
redhatjava-21-openjdk-windows2026-04-23redhat
redhatjava-25-openjdk-portable2026-04-23redhat
redhatjava-17-openjdk-portable2026-04-23redhat
redhatjava-21-openjdk-portable2026-04-23redhat
redhatjava-11-openjdk-windows2026-04-22redhat
redhatjava-11-openjdk-portable2026-04-22redhat
redhatjava-11-openjdk-1:11.0.31.0.11-1.el92026-04-22redhat
redhatjava-25-openjdk-1:25.0.3.0.9-1.el92026-04-22redhat

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(2)

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

Additional Vendor Advisories

(8)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 9× in last 7d / 42× 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 153 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-34282?
CVE-2026-34282 is a high vulnerability published on April 21, 2026. Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Networking). Supported versions that are affected are Oracle Java SE: 8u481-perf, 11.0.30, 17.0.18, 21.0.10, 25.0.2, 26; Oracle GraalVM for JDK: 17.0.18 and 21.0.10;…
When was CVE-2026-34282 disclosed?
CVE-2026-34282 was first published in the National Vulnerability Database on April 21, 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-2026-34282 actively exploited?
CVE-2026-34282 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 46.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-34282?
CVE-2026-34282 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-34282?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-34282, 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

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