What is CVE-2026-82857?

CVE-2026-82857 is a critical-severity vulnerability in Kerberosmansour Hulumi, classified under Improper Privilege Management. CVSS score: 9.8/10. Published 2026-08-31.

How severe is CVE-2026-82857?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Privilege escalation in Kerberosmansour Hulumi

CVE-2026-82857

hulumi versions before v1.3.2 contain a privilege escalation vulnerability in the weekly integration IAM policy that allows role lifecycle operations on af-e2e-* roles without sufficient boundary restrictions. Attackers with the documented principal can create persistent higher-privilege roles in the sandbox account.

Vulnerability class: Privilege Escalation

Published 2026-08-31 · last modified 2026-09-01.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (42.3th percentile), scored 2026-10-16.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002

Affected products

Kerberosmansour Hulumi

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

github.com/kerberosmansour/hulumi/security/advisories/GHSA-35qr-vx94-m5x3 (vendor-advisory)
www.vulncheck.com/advisories/hulumi-before-1.3.2-privilege-escalation-via-iam-p… (third-party-advisory)

Frequently asked questions

What is CVE-2026-82857?: CVE-2026-82857 is a critical-severity vulnerability in Kerberosmansour Hulumi, classified under Improper Privilege Management. CVSS score: 9.8/10. Published 2026-08-31.
How severe is CVE-2026-82857?: Critical severity. CVSS v3 base score is 9.8 out of 10.