CVE-2026-111624
MEDIUM
6,3
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
LOW
3,7
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: low
Integrity: none
Availability: none
Description
AI Translation Available
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can complete the SignalR negotiate step and receive refreshed notifications that disclose content keys, including unpublished content, and reveal editorial activity timing.
EPSS (Exploit Prediction Scoring System)
Trend Analysis
EPSS (Exploit Prediction Scoring System)
Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.
EPSS Score
0,0031
Percentile
0,2th
Updated
EPSS Score Trend (Last 3 Days)
306
Missing Authentication for Critical Function
DraftCommon Consequences
Security Scopes Affected:
Access Control
Other
Potential Impacts:
Gain Privileges Or Assume Identity
Varies By Context
Applicable Platforms
Technologies:
Cloud Computing, ICS/OT
https://github.com/umbraco/Umbraco-CMS/blob/release-18.2.0/src/Umbraco.Cms.Api.…
https://github.com/umbraco/Umbraco-CMS/blob/release-18.2.0/src/Umbraco.Cms.Api.…
https://github.com/umbraco/Umbraco-CMS/commit/243e082479c777d0f585bbd2f8db57160…
https://github.com/umbraco/Umbraco-CMS/commit/b4f6cfc9d0955f9d8443e68353db4a692…
https://github.com/umbraco/Umbraco-CMS/releases/tag/release-17.7.1
https://github.com/umbraco/Umbraco-CMS/releases/tag/release-18.2.1
https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-4c5q-6c64-96j7
https://www.vulncheck.com/advisories/umbraco-cms-before-17.7.1-and-18.2.1-missi…