CVE-2026-33489

Published: Mag 05, 2026 Last Modified: Mag 05, 2026

ExploitDB:

Other exploit source:

Google Dorks:

HIGH 8,2

Source: [email protected]

Attack Vector: network

Attack Complexity: low

Privileges Required: none

User Interaction: none

Confidentiality: N/A

Integrity: N/A

Availability: N/A

Description

AI Translation Available

CoreDNS is a DNS server that chains plugins. In versions prior to 1.14.3, the transfer plugin can select the wrong ACL stanza when both a parent zone and a more-specific subzone are configured. The longestMatch() function in plugin/transfer/transfer.go uses a lexicographic string comparison instead of an actual longest-suffix match to select the winning zone. As a result, a permissive parent-zone transfer rule can override a restrictive subzone rule depending on zone name ordering (e.g., 'example.org.' > 'a.example.org.' lexicographically). This allows an unauthorized remote client to perform AXFR/IXFR for the subzone and retrieve its full zone contents. This issue has been fixed in version 1.14.3.

863

Incorrect Authorization

Incomplete

Abstraction: Class Structure: Simple

Common Consequences

Security Scopes Affected:

Confidentiality Integrity Access Control Availability

Potential Impacts:

Read Application Data Read Files Or Directories Modify Application Data Modify Files Or Directories Gain Privileges Or Assume Identity Bypass Protection Mechanism Execute Unauthorized Code Or Commands Dos: Crash, Exit, Or Restart Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Resource Consumption (Other)

Applicable Platforms

Technologies: Database Server, Not Technology-Specific, Web Server

Likelihood of Exploit: High

View CWE Details

https://github.com/coredns/coredns/security/advisories/GHSA…

https://github.com/coredns/coredns/security/advisories/GHSA-h8mm-c463-wjq3

https://github.com/coredns/coredns/releases/tag/v1.14.3