MCP & Skills StandardizationTrail of Bits
Trail of Bits discloses the line jumping vulnerability
Disclosed the line jumping vulnerability
Why it matters
Showed that a malicious server can manipulate model behavior before any call, using only the descriptions in its tools/list response
Source — Primary sources first; secondary reports are labelled “Press”
Officialblog.trailofbits.comhttps://blog.trailofbits.com/2025/04/21/jumping-the-line-how-mcp-servers-can-attack-you-before-you-ever-use-them/Added in Week 35, 2026 · See that week