CVE-2026-27589
Description
A flaw was found in Caddy. The local administration API, when origin enforcement is not enabled, accepts cross-origin requests to its configuration loading endpoint. A remote attacker can exploit this by tricking a victim's browser into sending a malicious JSON configuration. This allows for unauthorized modification of the server's settings and behavior.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Understanding the Weakness (CWE)
Access Control,Other
Technical Impact: Gain Privileges or Assume Identity; Varies by Context; Bypass Protection Mechanism
An attacker can access any functionality that is inadvertently accessible to the source.
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