CVE-2026-48034

HIGHPre-NVD 8.58.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 83% 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
8.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.5Exploit: None knownExposed: 0

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

Hulumi is an open-source toolkit that ships secure-by-default cloud and platform infrastructure components for Pulumi. Prior to version 1.4.0, there is a bypass via decoy sibling resources targeting a different bucket. This issue has been patched in version 1.4.0.

CVSS v3
8.5
EG Score
8.5(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
Severity85% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

June 10, 2026

Last Modified

July 24, 2026

Advisory Details (4)

Auto-updated Jul 24, 2026
Patch available. Sources: github_pr, github_release, github.
github Patch Available

HULUMI-H5 bypass via decoy sibling resources targeting a different bucket · Advisory · kerberosmansour/hulumi · GitHub

https://github.com/kerberosmansour/hulumi/security/advisories/GHSA-9vc9-4jv3-rf86
github_release Patch Available

v1.4.0

Patch available: kerberosmansour/hulumi v1.4.0

https://github.com/kerberosmansour/hulumi/releases/tag/v1.4.0
github_pr Patch Available

security: fix 4 HIGH + 15 MEDIUM Codex findings (8 root-cause clusters) — DCO-signed replacement for #177

Patch available: kerberosmansour/hulumi v1.4.0 (PR #178 merged 2026-05-19)

https://github.com/kerberosmansour/hulumi/pull/178
github_pr

fix(policies): bind H5 hardening checks to exempted bucket (replaces #174)

Upstream fix in progress (PR #175 · kerberosmansour/hulumi, state=closed)

https://github.com/kerberosmansour/hulumi/pull/175

Vendor Advisories for CVE-2026-48034(1)

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

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
@hulumi/policies—1.4.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 7× 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. 2026-07-26 21:04 UTCEG score recompute
  2. 2026-07-26 14:54 UTCEPSS rescore
  3. 2026-07-26 05:19 UTCEG score recompute
  4. 2026-07-25 14:18 UTCEPSS rescore
  5. 2026-07-24 19:08 UTCEG score recompute▲ 8.50
  6. 2026-07-24 19:06 UTCMITRE cvelistV5CVSS v3 → 8.5 · CVSS v4 → 8.5
  7. 2026-07-23 03:18 UTCEG score recompute
  8. 2026-06-14 23:18 UTCEPSS rescore
  9. 2026-06-13 23:00 UTCEPSS rescore
  10. 2026-06-12 23:12 UTCEPSS rescore
  11. 2026-06-10 14:17 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-48034?
CVE-2026-48034 is a high vulnerability published on June 10, 2026. Hulumi is an open-source toolkit that ships secure-by-default cloud and platform infrastructure components for Pulumi. Prior to version 1.4.0, there is a bypass via decoy sibling resources targeting a different bucket. This issue has been patched in version 1.4.0.
When was CVE-2026-48034 disclosed?
CVE-2026-48034 was first published in the National Vulnerability Database on June 10, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48034 actively exploited?
CVE-2026-48034 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 82.6% of all scored CVEs.
What is the CVSS score of CVE-2026-48034?
CVE-2026-48034 has a CVSS v3 base score of 8.5 (NVD).
How do I remediate CVE-2026-48034?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48034, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-48034

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