CVE-2026-111624
- Source
- https://cve.org/CVERecord?id=CVE-2026-111624
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-111624.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-111624
- Aliases
-
- GHSA-4c5q-6c64-96j7
- Published
- 2026-10-16T17:39:00Z
- Modified
- 2026-10-24T02:49:27Z
- Severity
-
- 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Umbraco CMS before 17.7.1 and 18.2.1 Missing Authorization on SignalR Hubs
- Details
-
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can complete the SignalR negotiate step and receive refreshed notifications that disclose content keys, including unpublished content, and reveal editorial activity timing.
- Database specific
{ "cna_assigner": "VulnCheck", "cwe_ids": [ "CWE-306" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111624.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111624.json
- 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://nvd.nist.gov/vuln/detail/CVE-2026-111624
- https://www.vulncheck.com/advisories/umbraco-cms-before-17.7.1-and-18.2.1-missing-authorization-on-signalr-hubs
- https://github.com/umbraco/Umbraco-CMS/commit/243e082479c777d0f585bbd2f8db571607767b22
- https://github.com/umbraco/Umbraco-CMS/commit/b4f6cfc9d0955f9d8443e68353db4a692e91bd94
- https://github.com/umbraco/Umbraco-CMS
- https://github.com/umbraco/Umbraco-CMS/blob/release-18.2.0/src/Umbraco.Cms.Api.Management/Preview/PreviewHub.cs#L9-L11
- https://github.com/umbraco/Umbraco-CMS/blob/release-18.2.0/src/Umbraco.Cms.Api.Management/Preview/PreviewHubUpdater.cs#L58
Affected packages
Git / github.com/umbraco/umbraco-cms
Affected ranges
- Type
- GIT
- Repo
- https://github.com/umbraco/umbraco-cms
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "17.0.0" }, { "fixed": "17.7.1" } ], "source": "AFFECTED_FIELD", "strategy": "StandardRange" }, { "range": [ { "introduced": "18.0.0" }, { "fixed": "18.2.1" } ], "source": "AFFECTED_FIELD", "strategy": "StandardRange" }, { "range": [ { "fixed": "b4f6cfc9d0955f9d8443e68353db4a692e91bd94" } ], "source": "REFERENCES_COMMIT" }, { "range": [ { "fixed": "243e082479c777d0f585bbd2f8db571607767b22" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "release-18.2.1", "range": [ { "fixed": "e573de0991515010353295f8439853960266b56e" } ], "source": "REFERENCES_TAG" }, { "original_tag": "release-17.7.1", "range": [ { "fixed": "4b0184ad5d2a5ccfdcd1c65b6f30a6357f8606fd" } ], "source": "REFERENCES_TAG" } ] }