CVE-2026-82856

criticalpriority · track · 39EPSS 0.005 · 44 %ileUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.51% (44th) EPSS
CVSS 9.8 · critical
Is it mine?
1 products
Check your exposure
Who says so?
1 sources
osv

EPSS · scored 2026-10-28

@hulumi/policies versions before 1.3.2 fail to properly validate set-qualified AWS IAM condition operators in GitHub OIDC trust policies. Attackers can use ForAnyValue:StringLike operators to hide wildcard GitHub Actions OIDC subject conditions from security guardrails.

01

cvss

Technical severity, 0–10. One row per scoring source.

9.8
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.1–9.8

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · disclosure@vulncheck.comexploitability 3.9 · impact 5.9
v4.09.3criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · disclosure@vulncheck.com
v4.08.1highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-284USCWE-284US
04

affected products (1)

Products and version ranges known to be affected.

05

advisories (1)

Vendor and ecosystem advisories describing this.

  • GHSA-q2f7-m237-v562@hulumi/policies: GitHub OIDC trust policy bypass via AWS set-qualified condition operators2026-05-21ghsa · osvUS

    Impact: @hulumi/policies versions before 1.3.2 only checked exact AWS IAM StringLike/StringEquals condition operator keys in G_OIDC_1. Set-qualified operators such as ForAnyValue:StringLike could hide wildcard GitHub Actions OIDC sub conditions from the mandatory guardrail. Patched in 1.3.2: the AWS trust-policy inspector now evaluates set-qualified string operators and rejects unsafe GitHub OIDC sub conditions. Remediation: upgrade @hulumi/policies to 1.3.2 or later.

06

sources

Which sources assert this record, and when.

osvNVDCVE.orgMITRE
published 2026-08-31modified 2026-09-02
07

references (2) nvd

External citations — patches, advisories, analysis.

scry

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