LOWCVSS v3.1 3.7Vulnerability
CVE-2026-111624
Umbraco CMS before 17.7.1 and 18.2.1 contains a missing authorization vulnerability that allows unauthenticated clients to connect to the backoffice PreviewHub and BackofficeHub SignalR hubs. Attackers can complete the SignalR negotiate step and receive refreshed notifications that disclose content keys, including unpublished content, and reveal editorial activity timing.
Properties
- Severity
- LOW
- Nvd fetched at
- 2026-10-20T21:14:08.448323+00:00
- Epss score
- 0.00309
- Cvss severity
- LOW
- Cvss score
- 3.7
- Retrieved at
- 2026-10-21T01:24:48+00:00
- Last source
- FIRST EPSS
- Score
- 3.7
- Cvss version
- 3.1
- Cve id
- CVE-2026-111624
- Cvss vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
- First seen by Signal
- 2026-10-18T13:39:03+00:00
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
- Published at
- 2026-10-16T18:17:42.280
- Last modified
- 2026-10-16T19:00:33.600
- Epss percentile
- 0.22352
Related Entities (1)
HAS_WEAKNESS (1)
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