Auth bypass in Vearch
CVE-2026-108746
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.
Vulnerability class: Broken Access Control
Published .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@haind/vearch-rbac-privilege-level-ignored-authz-bypass (third-party-advisory)
- github.com/vearch/vearch/blob/bae78b189ff0ab1d8ac659c6acaeeb5f630db33f/internal… (technical-description)
- github.com/vearch/vearch/blob/bae78b189ff0ab1d8ac659c6acaeeb5f630db33f/internal… (technical-description)
- github.com/vearch/vearch (product)
- www.vulncheck.com/advisories/vearch-3.5.2-through-3.5.9-incorrect-authorization… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-108746?
- CVE-2026-108746 is a high-severity vulnerability in Vearch, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2026-10-11.
- How severe is CVE-2026-108746?
- High severity. CVSS v3 base score is 8.8 out of 10.