CVE-2026-31959
Description
A flaw was found in Quill. This Server-Side Request Forgery (SSRF) vulnerability occurs when Quill attempts to fetch Apple notarization submission logs. An attacker, capable of tampering with API responses from Apple's notarization service (e.g., in environments with TLS-intercepting proxies), can supply a malicious URL. This causes the Quill client to make requests to arbitrary internal or external network destinations, potentially leading to the exfiltration of sensitive data such as cloud provider credentials or internal service responses.
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)
Confidentiality
Technical Impact: Read Application Data
Integrity
Technical Impact: Execute Unauthorized Code or Commands
Access Control
Technical Impact: Bypass Protection Mechanism
By providing URLs to unexpected hosts or ports, attackers can make it appear that the server is sending the request, possibly bypassing access controls such as firewalls that prevent the attackers from accessing the URLs directly. The server can be used as a proxy to conduct port scanning of hosts in internal networks, use other URLs such as that can access documents on the system (using file://), or use other protocols such as gopher:// or tftp://, which may provide greater control over the contents of requests.
Frequently Asked Questions
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