An article exploring generative testing techniques for finding bugs in software, using a regex engine bug as a case study. The author demonstrates how fuzzing with an oracle (comparing multiple implementations) can effectively discover edge cases that unit tests miss, emphasizing that small, carefully crafted inputs often reveal bugs better than large random ones.
GitLab released critical security patches (19.4.1, 19.3.3, 19.2.7) on September 23, 2026 to address multiple high-severity vulnerabilities including a double-free in the regex parser (CVE-2026-89078) and integer overflow (CVE-2026-93577) that could allow authenticated users to execute arbitrary code via malicious CI/CD configurations. Additional vulnerabilities in the merge request diff viewer and Duo AI feature were also patched.