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OpenAdvisories
High · 7.1 CVE-2026-47657 EUVD-2026-46349

HumHub Missing Authorization on Remove All Space Members Action

Published Jul 21, 2026 · Updated Jul 21, 2026 · Assigned by GitHub_M

Description

HumHub is an Open Source Enterprise Social Network. In versions 1.13.0 through 1.18.2, a missing authorization check in the Space member management controller allowed any authenticated user to trigger the removal of all members from any Space, regardless of their own role or membership in that Space. Versions 1.13.0 through 1.18.2 are affected. The vulnerability has been patched in version 1.18.3, and all users are encouraged to upgrade to this version or later immediately. No known workaround is available.

Affected products

VendorProductAffectedFixed
humhub humhub >= 1.13.0, < 1.18.3 —

References