CVE-2026-66143

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-24. 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: 1%CVSS: 7.5Exploit: None knownExposed: 0

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

It is possible to bypass the maximum number of normalized policy alternatives that was introduced in Apache Neethi 3.2.2 via certain crafted policies, which may lead to a denial of service attack via resource consumption. Users are recommended to upgrade to version 3.2.3, which fixes this issue.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

July 24, 2026

Last Modified

July 27, 2026

Advisory Details (2)

Auto-updated Jul 24, 2026
No patch confirmed yet.
generic

oss-security - CVE-2026-66143: Apache Neethi: Missing global alternative-output budget across policy computation paths

http://www.openwall.com/lists/oss-security/2026/07/24/9
generic
https://lists.apache.org/thread/s6o6p5pvcbcsk54dlg6j699t5gxol28w

Vendor Advisories for CVE-2026-66143(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 18× in last 7d / 86× 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 182 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-66143?
CVE-2026-66143 is a high vulnerability published on July 24, 2026. It is possible to bypass the maximum number of normalized policy alternatives that was introduced in Apache Neethi 3.2.2 via certain crafted policies, which may lead to a denial of service attack via resource consumption. Users are recommended to upgrade to version 3.2.3, which fixes this issue.
When was CVE-2026-66143 disclosed?
CVE-2026-66143 was first published in the National Vulnerability Database on July 24, 2026, with the most recent update on July 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-66143 actively exploited?
CVE-2026-66143 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 57.8% of all scored CVEs.
What is the CVSS score of CVE-2026-66143?
CVE-2026-66143 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-66143?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-66143, 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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