Missing Authorization Vulnerability in Netcccyun dnsmgr Affects User Permissions
CVE-2026-129468

5.3MEDIUM

Key Information:

Vendor

Netcccyun

Status
Dnsmgr
Vendor
CVE Published:
15 November 2026

What is CVE-2026-129468?

The dnsmgr product from Netcccyun, specifically versions prior to 2.22, is affected by a missing authorization vulnerability in the POST request to /cloudflare/get_domain_default_line. This flaw permits restricted users to gain unauthorized access to domains that exceed their permissions, enabling them to iterate through the domain_id parameter. Consequently, this allows restricted sub-users or single-domain logins to enumerate domain IDs and retrieve each domain's DNS line list, exposing sensitive information regarding DNS configurations.

Affected Version(s)

dnsmgr 2.18 < 2.22

References

https://hackmd.io/@hieund/dnsmgr-cloudflare-default-line-...
third-party-advisory
https://github.com/netcccyun/dnsmgr/issues/580
issue-tracking
https://github.com/netcccyun/dnsmgr/commit/175468c6423c04...
patch

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

hieuPenguinnn
.