CVE Explorer

CVE-2026-31957

Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. From 3.0.0 to before 3.1.0, if Himmelblau is deployed without a configured tenant domain in himmelblau.conf, authentication is not tenant-scoped. In this mode, Himmelblau can accept authentication attempts for arbitrary Entra ID domains by dynamically registering providers at runtime. This behavior is intended for initial/local bootstrap scenarios, but it can create risk in remote authentication environments. This v

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:dc39a2506523ae66f1a3ec7a8f74ab0d7fecb83fb7d5447a52cf510f24eab648

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"himmelblau","vendor":"himmelblau-idm","versions":[{"status":"affected","version":">= 3.0.0, < 3.1.0"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:370f49003f53ef0bf15684361afbd925887e183f6fa99e38ec683c6ff93a3de2 · sha256:be5893409099df30… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":10,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:370f49003f53ef0bf15684361afbd925887e183f6fa99e38ec683c6ff93a3de2 · sha256:be5893409099df30… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-1188","description":"CWE-1188: Insecure Default Initialization of Resource","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:370f49003f53ef0bf15684361afbd925887e183f6fa99e38ec683c6ff93a3de2 · sha256:be5893409099df30… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion

{"name":"https://github.com/himmelblau-idm/himmelblau/security/advisories/GHSA-q746-m2wv-qh4v","tags":["x_refsource_CONFIRM"],"url":"https://github.com/himmelblau-idm/himmelblau/security/advisories/GHSA-q746-m2wv-qh4v"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:370f49003f53ef0bf15684361afbd925887e183f6fa99e38ec683c6ff93a3de2 · sha256:be5893409099df30… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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