Auth bypass in Tencentblueking Bk-Cmdb
CVE-2026-119648
Tencent BlueKing CMDB (bk-cmdb) through 3.14.6 contains a missing authorization vulnerability that allows authenticated users to view hosts of other businesses via POST /api/v3/hosts/search/asstdetail. Attackers can submit host search conditions targeting other businesses or omitting business filters to retrieve host attributes and topology association details, because the route is mapped to SkipAction and SearchHostWithAsstDetail skips AuthorizeSearchHost.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
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
- github.com/TencentBlueKing/bk-cmdb/issues/8709 (issue-tracking)
- github.com/TencentBlueKing/bk-cmdb/blob/release-v3.14.6/src/scene_server/host_s… (technical-description)
- github.com/TencentBlueKing/bk-cmdb/blob/release-v3.14.6/src/ac/parser/host.go (technical-description)
- github.com/TencentBlueKing/bk-cmdb/blob/release-v3.14.6/src/scene_server/host_s… (technical-description)
- hackmd.io/@hieuPenguinnn/bk-cmdb-host-search-asstdetail-cross-business-missing-… (third-party-advisory)
- github.com/TencentBlueKing/bk-cmdb (product)
- www.vulncheck.com/advisories/blueking-cmdb-through-3.14.6-missing-authorization… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-119648?
- CVE-2026-119648 is a medium-severity vulnerability in Tencentblueking Bk-Cmdb, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-10-30.
- How severe is CVE-2026-119648?
- Medium severity. CVSS v3 base score is 4.3 out of 10.