CVE-2026-82859

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-31. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

hulumi versions before v1.3.2 contain a deployment SCP template that allows tag-on-create bypasses for hulumi:iac-role protections. Attackers can bypass intended IAM boundary restrictions by exploiting the weakened SCP template in downstream deployments.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

August 31, 2026

Last Modified

September 10, 2026

Advisory Details (2)

Auto-updated Sep 24, 2026
Patch available. Sources: github.
generic

hulumi before v1.3.2 SCP Template Tag-on-Create Bypass | Advisories | VulnCheck

https://www.vulncheck.com/advisories/hulumi-before-1.3.2-scp-template-tag-on-create-bypass
github Patch Available

Deployment SCP template allowed hulumi:iac-role tag-on-create bypass · Advisory · kerberosmansour/hulumi · GitHub

Affected: v1.3.2: the SCP template and guide were tightened and covered by regression check

https://github.com/kerberosmansour/hulumi/security/advisories/GHSA-86q4-r5j3-ff5c

Vendor Advisories for CVE-2026-82859(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 57× in last 7d / 206× 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 206 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-82859?
CVE-2026-82859 is a critical vulnerability published on August 31, 2026. hulumi versions before v1.3.2 contain a deployment SCP template that allows tag-on-create bypasses for hulumi:iac-role protections. Attackers can bypass intended IAM boundary restrictions by exploiting the weakened SCP template in downstream deployments.
When was CVE-2026-82859 disclosed?
CVE-2026-82859 was first published in the National Vulnerability Database on August 31, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-82859 actively exploited?
CVE-2026-82859 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 56.8% of all scored CVEs.
What is the CVSS score of CVE-2026-82859?
CVE-2026-82859 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-82859?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-82859, 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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