vulnerability

• Over a barrel

  To be in a helpless or vulnerable position, especially one where someone else has complete control over you.

• Catch someone with their pants down

  To discover someone doing something they shouldn't be, or to find them completely unprepared and vulnerable.

• A chink in the armor

  A small, often hidden, flaw or weakness in something that is otherwise strong or perfect, making it vulnerable.

• A house of cards

  A plan, organization, or situation that is inherently unstable, poorly constructed, and likely to collapse.

• weak point

  A particular fault, disadvantage, or area of vulnerability that makes someone or something susceptible to failure or criticism.

• Bare one's soul

  To reveal one's deepest thoughts, feelings, and secrets, often implying great vulnerability.

• Defenseless

  Unable to protect oneself from attack or harm; completely vulnerable.

• At risk

  In a situation where exposure to danger, harm, or loss is possible.