CVE-2026-19478: How to Detect and Mitigate GitLab's Critical 9.4 Code Injection Zero-Day
GitLab released an emergency out-of-band security patch to address CVE-2026-19478, a critical code injection vulnerability rating 9.4 on the CVSS scale. The flaw allows unauthenticated remote attackers to modify or delete public projects, rewrite repository state, and ban maintainers using a single crafted HTTP GraphQL request. Threat intelligence teams confirm that automated, AI-driven exploitation is actively reaching honeypots in the wild, making immediate patching or mitigation critical for