CVE-2026-67590

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-05. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

A pre-authentication attacker could leverage type nesting to cause a StackOverflowError potentially leading to denial of service.

This issue affects Apache Qpid ProtonJ2: through 1.1.0.

Users are recommended to upgrade to version 1.2.0, which fixes the issue.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
41%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 7, 2026

Advisory Details (2)

Auto-updated Aug 6, 2026
No patch confirmed yet.
generic

oss-security - CVE-2026-67590: Apache Qpid ProtonJ2: Unbounded type nesting can lead to pre-authentication stackoverflow

http://www.openwall.com/lists/oss-security/2026/08/04/29
generic
https://lists.apache.org/thread/kmov6k7f3moqy01m1s370fl61vgos3ly

Vendor Advisories for CVE-2026-67590(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 21× in last 7d / 97× 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 159 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-67590?
CVE-2026-67590 is a high vulnerability published on August 5, 2026. A pre-authentication attacker could leverage type nesting to cause a StackOverflowError potentially leading to denial of service. This issue affects Apache Qpid ProtonJ2: through 1.1.0. Users are recommended to upgrade to version 1.2.0, which fixes the issue.
When was CVE-2026-67590 disclosed?
CVE-2026-67590 was first published in the National Vulnerability Database on August 5, 2026, with the most recent update on August 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-67590 actively exploited?
CVE-2026-67590 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 58.5% of all scored CVEs.
What is the CVSS score of CVE-2026-67590?
CVE-2026-67590 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-67590?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-67590, 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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