# CVE-2026-121552: domain-admin before 1.6.79 Missing Authorization via getGroupUserList

Status: published. Published: 2026-11-03. Updated: 2026-11-03.

Dromara domain-admin before 1.6.79 contains a missing authorization vulnerability in the POST /api/getGroupUserList handler that allows authenticated users to read other groups' members. Attackers can enumerate sequential group_id values to disclose member usernames, leader and edit-permission flags, and owner usernames of groups they do not belong to.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/dromara/domain-admin/commit/6245d002c995bf3868f73d77f69138df40f557a3

## Affected products and versions

- dromara / domain-admin (dromara/domain-admin): ≥ 0; < 1.6.79 (affected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 5.3 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 4.3 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N; source: CNA: VulnCheck

- CVSS 4.0: 5.3 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: disclosure@vulncheck.com

- CVSS 3.1: 4.3 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N; source: NVD: disclosure@vulncheck.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation poc; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-862

## Exploit evidence

- exploit: https://github.com/dromara/domain-admin/issues/229 (ADP: CISA-ADP)

## References

- https://github.com/dromara/domain-admin/issues/229 (CNA: VulnCheck; issue-tracking)

- https://github.com/dromara/domain-admin (CNA: VulnCheck; product)

- https://github.com/dromara/domain-admin/commit/6245d002c995bf3868f73d77f69138df40f557a3 (CNA: VulnCheck; patch)

- https://github.com/dromara/domain-admin/blob/v1.6.78/domain_admin/api/group_user_api.py#L127 (CNA: VulnCheck; technical-description)

- https://www.vulncheck.com/advisories/domain-admin-before-1.6.79-missing-authorization-via-getgroupuserlist (CNA: VulnCheck; third-party-advisory)

- https://github.com/dromara/domain-admin/issues/229 (ADP: CISA-ADP; exploit)

- https://github.com/dromara/domain-admin (disclosure@vulncheck.com)

- https://github.com/dromara/domain-admin/blob/v1.6.78/domain_admin/api/group_user_api.py#L127 (disclosure@vulncheck.com)

- https://github.com/dromara/domain-admin/commit/6245d002c995bf3868f73d77f69138df40f557a3 (disclosure@vulncheck.com)

- https://github.com/dromara/domain-admin/issues/229 (disclosure@vulncheck.com)

- https://www.vulncheck.com/advisories/domain-admin-before-1.6.79-missing-authorization-via-getgroupuserlist (disclosure@vulncheck.com)

- https://github.com/dromara/domain-admin/issues/229 (134c704f-9b21-4f2e-91b3-4a467353bcc0)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-121552; retrieved 2026-11-03; source updated 2026-11-03

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-121552; retrieved 2026-11-03; source updated 2026-11-03

Revision: f05b2f761ae885f5efe0ad784b5453d1d4d6005a4c15ecb3677a940effbf626c

Canonical: https://y2.dev/cve/CVE-2026-121552

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

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