Slang & Culture
Vuln
Security shorthand for a vulnerability: a weakness in software, hardware or a process that an attacker could exploit. It appears in phrases like "vuln research" and "vuln disclosure," and has become common in AI discussions as models and agents are used to find and report flaws in code.
Origin · no single documented coiner
A clipped form of "vulnerability" long used informally in the computer security community; no single documented coiner. Formal catalogs such as MITRE's CVE program use the full word.