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CVE-2026-31979

Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. Prior to 3.1.0 and 2.3.8, the himmelblaud-tasks daemon, running as root, writes Kerberos cache files under /tmp/krb5cc_<uid> without symlink protections. Since commit 87a51ee, PrivateTmp is explicitly removed from the tasks daemon's systemd hardening, exposing it to the host /tmp. A local user can exploit this via symlink attacks to chown or overwrite arbitrary files, achieving local privilege escalation. This vulne
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:cc9662d36214f9753cf06bd1ea3fdb18ff997ba6ea89d11656ef2ca663ed34a4
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"himmelblau","vendor":"himmelblau-idm","versions":[{"status":"affected","version":">= 1.0.0, < 2.3.8"},{"status":"affected","version":">= 3.0.0-alpha, < 3.1.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8e367e5d2bb245e4a4255144679750f97377c5a0b64b827ebbdd88872a92c746 · sha256:f7096a1b6de1b55a… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/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:v2:8e367e5d2bb245e4a4255144679750f97377c5a0b64b827ebbdd88872a92c746 · sha256:f7096a1b6de1b55a… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-59","description":"CWE-59: Improper Link Resolution Before File Access ('Link Following')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8e367e5d2bb245e4a4255144679750f97377c5a0b64b827ebbdd88872a92c746 · sha256:f7096a1b6de1b55a… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/himmelblau-idm/himmelblau/security/advisories/GHSA-44wm-q286-ghq3","tags":["x_refsource_CONFIRM"],"url":"https://github.com/himmelblau-idm/himmelblau/security/advisories/GHSA-44wm-q286-ghq3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8e367e5d2bb245e4a4255144679750f97377c5a0b64b827ebbdd88872a92c746 · sha256:f7096a1b6de1b55a… · /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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