CVE-2026-42439

AC-6 reduces the set of actions reachable without proper authorization, limiting blast radius of missing checks.

Runtime monitoring of web applications and services can detect anomalous outbound requests indicative of SSRF.

Vulnerability identification processes can discover and record SSRF flaws in web applications.

Explicitly requires defining, enforcing, and reviewing authorizations and least privilege, directly preventing missing authorization checks.

Network segmentation and egress controls can limit the damage from successful SSRF requests.

Secure development practices directly include input validation and destination allow-listing that prevent SSRF.

Requiring formal authorization of every access request before rights are granted ensures that checks for required permissions are performed, preventing missing authorization checks from being introduced.

Mandatory authorization checks and central records of granted rights ensure that every access attempt is preceded by an explicit decision rather than relying on missing checks.

Segregating the approval of access rights from their implementation provides an independent check that reduces the impact of missing authorization checks in the resulting system configuration.

By requiring competent outsiders to verify that every function enforces the need-to-know principle, the control lowers the likelihood that missing authorization checks persist undetected.

Operational threat data describing SSRF campaigns can be used to tighten outbound-request allow-lists and detection rules before attackers exploit them.

Defining authorization responsibilities and reviewing risk-treatment progress throughout the project lifecycle catches missing authorization checks before the system is deployed.