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CVE-2026-31832

Umbraco is an ASP.NET CMS. From 14.0.0 to before 16.5.1 and 17.2.2, A broken object-level authorization vulnerability exists in a backoffice API endpoint that allows authenticated users to assign domain-related data to content nodes without proper authorization checks. The issue is caused by insufficient authorization enforcement on the affected API endpoint, whereby via an API call, domains can be set on content nodes that the editor does not have permission to access (either via user group pri
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:37bb7b3c6d2e99b745c94ba465f0c6254e7b843ac29b885b3c7431de76b18c9a
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"Umbraco-CMS","vendor":"umbraco","versions":[{"status":"affected","version":">= 14.0.0, < 16.5.1"},{"status":"affected","version":">= 17.0.0, < 17.2.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3ec0d2fcb91f74ee2b32d107dbe6277e98f44981671d63357b2f74778163afb2 · sha256:2c64853c1ae9d07d… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3ec0d2fcb91f74ee2b32d107dbe6277e98f44981671d63357b2f74778163afb2 · sha256:2c64853c1ae9d07d… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-639","description":"CWE-639: Authorization Bypass Through User-Controlled Key","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3ec0d2fcb91f74ee2b32d107dbe6277e98f44981671d63357b2f74778163afb2 · sha256:2c64853c1ae9d07d… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-fpvf-fvp5-996r","tags":["x_refsource_CONFIRM"],"url":"https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-fpvf-fvp5-996r"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3ec0d2fcb91f74ee2b32d107dbe6277e98f44981671d63357b2f74778163afb2 · sha256:2c64853c1ae9d07d… · /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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