CVE-2026-103503
Description
A flaw was found in hex. When a custom Certificate Authority (CA) store is configured to restrict trusted authorities, hex inadvertently continues to validate certificate chains against its bundled CA certificates. An attacker capable of intercepting network traffic and holding a certificate issued by a bundled CA can impersonate a trusted host to the client. This issue can result in unauthorized data disclosure or tampering.
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.
Understanding the Weakness (CWE)
Integrity,Authentication
Technical Impact: Bypass Protection Mechanism; Gain Privileges or Assume Identity
When a certificate is invalid or malicious, it might allow an attacker to spoof a trusted entity by interfering in the communication path between the host and client. The product might connect to a malicious host while believing it is a trusted host, or the product might be deceived into accepting spoofed data that appears to originate from a trusted host.
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