What is CVE-2026-82859?

CVE-2026-82859 is a critical-severity vulnerability in Kerberosmansour Hulumi, classified under Improper Access Control. CVSS score: 9.8/10. Published 2026-08-31.

How severe is CVE-2026-82859?

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

Vulnerability in Kerberosmansour Hulumi

CVE-2026-82859

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.

EPSS: 0.003 (22.3th percentile) — read the EPSS interpretation.

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.

Affected products

Kerberosmansour Hulumi

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-82859?: CVE-2026-82859 is a critical-severity vulnerability in Kerberosmansour Hulumi, classified under Improper Access Control. CVSS score: 9.8/10. Published 2026-08-31.
How severe is CVE-2026-82859?: Critical severity. CVSS v3 base score is 9.8 out of 10.