What is CVE-2026-34397?

CVE-2026-34397 is a medium-severity vulnerability in Himmelblau-idm Himmelblau, classified under Improper Privilege Management. CVSS score: 6.3/10. Published 2026-04-01.

How severe is CVE-2026-34397?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Privilege escalation in Himmelblau-idm Himmelblau

CVE-2026-34397

Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. From versions 2.0.0-alpha to before 2.3.9 and 3.0.0-alpha to before 3.1.1, there is a conditional local privilege escalation vulnerability in an edge-case nam…

Vulnerability class: Privilege Escalation

EPSS: 0.000 (2.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

Himmelblau-idm Himmelblau — versions >= 2.0.0-alpha, < 2.3.9, >= 3.0.0-alpha, < 3.1.1

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

https://github.com/himmelblau-idm/himmelblau/security/advisories/GHSA-v7xx-7mqc-g835 (x_refsource_CONFIRM)
https://github.com/himmelblau-idm/himmelblau/releases/tag/2.3.9 (x_refsource_MISC)
https://github.com/himmelblau-idm/himmelblau/releases/tag/3.1.1 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-34397?: CVE-2026-34397 is a medium-severity vulnerability in Himmelblau-idm Himmelblau, classified under Improper Privilege Management. CVSS score: 6.3/10. Published 2026-04-01.
How severe is CVE-2026-34397?: Medium severity. CVSS v3 base score is 6.3 out of 10.