Vearch 3.5.2 through 3.5.9 Incorrect Authorization via Role.HasPermissionForResources

Advisories

Vearch 3.5.2 through 3.5.9 Incorrect Authorization via Role.HasPermissionForResources

severity: high
date: 10/11/2026
Affecting: vearch >= 3.5.2, <= 3.5.9
CVE: CVE-2026-108746
CWE: CWE-863 Incorrect Authorization
CVSS: 8.7
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References: https://hackmd.io/@haind/vearch-rbac-privilege-level-ignored-authz-bypass
https://github.com/vearch/vearch/blob/bae78b189ff0ab1d8ac659c6acaeeb5f630db33f/internal/entity/user.go#L300-L313
https://github.com/vearch/vearch/blob/bae78b189ff0ab1d8ac659c6acaeeb5f630db33f/internal/master/services/role_service.go#L180-L229
https://github.com/vearch/vearch
Credit: HaiND from the Post and Telecommunication Institute of Technology
Description: Vearch 3.5.2 through 3.5.9 contains an incorrect authorization vulnerability in Role.HasPermissionForResources that ignores stored ReadOnly or None privilege levels for resources listed in a role. Authenticated non-root users can upsert and delete documents with read-only access, or call PUT /roles to grant their role WriteRead privileges, escalating toward cluster administrator access.

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