CVE-2026-8100

HIGHPre-NVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 67% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
8.6
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.6Exploit: NoneExposed: 0

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

Impact

A security issue has been identified in Chef 360 that could allow unauthorized access to protected API endpoints under specific conditions. This issue is due to improper handling of URL-encoded paths during request processing. In certain scenarios, an authenticated request may bypass standard access controls gaining additional privileges, potentially allowing access to API endpoints that are intended to be restricted to higher-permissioned roles. The impact is limited to environments where the affected request patterns can be triggered and depends on specific deployment configuration and access controls in place. Resolution The issue has been addressed through product updates that improve request validation and enforce strict path normalization before authorization checks.  Customers are advised to update to the latest available version containing the fix, version 1.7.1 or later.

CVSS v3
8.6
EG Score
8.6(medium)
EG Risk
43(Track)
EG Risk 43/100SSVC: 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
Severity86% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
32.7%
KEV
Not listed

Published

June 18, 2026

Last Modified

June 22, 2026

Advisory Details (1)

Auto-updated Jun 18, 2026
No patch confirmed yet.
generic

Progress Customer Community

https://community.progress.com/s/article/Authentication-Bypass-via-URL-Encoded-Path-Traversal

Vendor Advisories for CVE-2026-8100(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 10× 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. 2026-07-23 14:18 UTCEPSS rescore
  2. 2026-07-23 03:23 UTCEG score recompute
  3. 2026-07-22 14:08 UTCEPSS rescore
  4. 2026-07-21 15:25 UTCEPSS rescore
  5. 2026-07-21 15:25 UTCEPSS rescore
  6. 2026-07-20 17:08 UTCEPSS rescore
  7. 2026-07-19 14:31 UTCEPSS rescore
  8. 2026-07-19 02:29 UTCEPSS rescore
  9. 2026-07-18 10:04 UTCEPSS rescore
  10. 2026-07-16 20:55 UTCGHSA enrichment
  11. 2026-07-16 17:03 UTCEPSS rescore
  12. 2026-07-16 03:49 UTCGHSA enrichment
  13. 2026-07-15 16:57 UTCEPSS rescore
  14. 2026-07-15 14:53 UTCGHSA enrichment
  15. 2026-07-15 02:00 UTCEPSS rescore
  16. 2026-07-15 01:58 UTCGHSA enrichment
  17. 2026-07-14 13:03 UTCGHSA enrichment
  18. 2026-07-14 00:08 UTCGHSA enrichment
  19. 2026-07-13 22:31 UTCEPSS rescore
  20. 2026-07-13 11:08 UTCGHSA enrichment
  21. 2026-07-13 06:13 UTCEPSS rescore
  22. 2026-07-12 22:13 UTCGHSA enrichment
  23. 2026-07-12 09:15 UTCGHSA enrichment
  24. 2026-07-12 05:46 UTCEPSS rescore
  25. 2026-07-11 20:20 UTCGHSA enrichment
Show 67 more
  1. 2026-07-11 08:27 UTCEPSS rescore
  2. 2026-07-11 07:25 UTCGHSA enrichment
  3. 2026-07-10 18:30 UTCGHSA enrichment
  4. 2026-07-10 05:24 UTCGHSA enrichment
  5. 2026-07-09 19:10 UTCEPSS rescore
  6. 2026-07-09 16:10 UTCGHSA enrichment
  7. 2026-07-09 02:04 UTCGHSA enrichment
  8. 2026-07-08 15:16 UTCEPSS rescore
  9. 2026-07-08 15:16 UTCEPSS rescore
  10. 2026-07-08 13:06 UTCGHSA enrichment
  11. 2026-07-08 00:10 UTCGHSA enrichment
  12. 2026-07-07 13:46 UTCEPSS rescore
  13. 2026-07-07 13:46 UTCEPSS rescore
  14. 2026-07-07 11:14 UTCGHSA enrichment
  15. 2026-07-06 21:34 UTCGHSA enrichment
  16. 2026-07-06 16:27 UTCEPSS rescore
  17. 2026-07-06 16:27 UTCEPSS rescore
  18. 2026-07-06 06:26 UTCGHSA enrichment
  19. 2026-07-06 02:23 UTCEPSS rescore
  20. 2026-07-06 02:23 UTCEPSS rescore
  21. 2026-07-05 17:06 UTCGHSA enrichment
  22. 2026-07-05 04:09 UTCGHSA enrichment
  23. 2026-07-05 02:31 UTCEPSS rescore
  24. 2026-07-05 02:30 UTCEPSS rescore
  25. 2026-07-04 15:05 UTCGHSA enrichment
  26. 2026-07-04 06:31 UTCEPSS rescore
  27. 2026-07-04 06:31 UTCEPSS rescore
  28. 2026-07-04 02:08 UTCGHSA enrichment
  29. 2026-07-03 13:11 UTCGHSA enrichment
  30. 2026-07-03 00:15 UTCGHSA enrichment
  31. 2026-07-02 11:20 UTCGHSA enrichment
  32. 2026-07-01 22:24 UTCGHSA enrichment
  33. 2026-07-01 15:07 UTCEPSS rescore
  34. 2026-07-01 09:02 UTCGHSA enrichment
  35. 2026-06-30 23:22 UTCEPSS rescore
  36. 2026-06-30 20:07 UTCGHSA enrichment
  37. 2026-06-30 07:12 UTCGHSA enrichment
  38. 2026-06-29 18:17 UTCGHSA enrichment
  39. 2026-06-29 14:06 UTCEPSS rescore
  40. 2026-06-29 05:17 UTCGHSA enrichment
  41. 2026-06-28 16:21 UTCGHSA enrichment
  42. 2026-06-28 14:07 UTCEPSS rescore
  43. 2026-06-28 04:56 UTCEPSS rescore
  44. 2026-06-28 03:26 UTCGHSA enrichment
  45. 2026-06-27 14:31 UTCGHSA enrichment
  46. 2026-06-27 03:08 UTCEPSS rescore
  47. 2026-06-27 01:36 UTCGHSA enrichment
  48. 2026-06-26 12:40 UTCGHSA enrichment
  49. 2026-06-25 23:45 UTCGHSA enrichment
  50. 2026-06-25 13:50 UTCEPSS rescore
  51. 2026-06-25 10:49 UTCGHSA enrichment
  52. 2026-06-24 21:54 UTCGHSA enrichment
  53. 2026-06-24 14:05 UTCEPSS rescore
  54. 2026-06-24 08:59 UTCGHSA enrichment
  55. 2026-06-23 21:33 UTCEPSS rescore
  56. 2026-06-23 20:02 UTCGHSA enrichment
  57. 2026-06-23 07:04 UTCGHSA enrichment
  58. 2026-06-22 18:07 UTCGHSA enrichment
  59. 2026-06-22 05:09 UTCGHSA enrichment
  60. 2026-06-21 16:14 UTCGHSA enrichment
  61. 2026-06-21 16:11 UTCGHSA enrichment
  62. 2026-06-21 03:14 UTCGHSA enrichment
  63. 2026-06-20 14:18 UTCGHSA enrichment
  64. 2026-06-20 01:18 UTCGHSA enrichment
  65. 2026-06-19 12:20 UTCGHSA enrichment
  66. 2026-06-18 23:24 UTCEG score recompute
  67. 2026-06-18 23:22 UTCNVD updatefirst tracked

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Frequently asked(5)

What is CVE-2026-8100?
CVE-2026-8100 is a high vulnerability published on June 18, 2026. Impact A security issue has been identified in Chef 360 that could allow unauthorized access to protected API endpoints under specific conditions. This issue is due to improper handling of URL-encoded paths during request processing. In certain scenarios, an authenticated request may bypass…
When was CVE-2026-8100 disclosed?
CVE-2026-8100 was first published in the National Vulnerability Database on June 18, 2026, with the most recent update on June 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8100 actively exploited?
CVE-2026-8100 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 32.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-8100?
CVE-2026-8100 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2026-8100?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8100, 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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