`mcp_config_plaintext_secret`

CWE-312 OWASP ASI03

Mcp Config Plaintext Secret — a PullGuard finding type. Findings of this type appear in the PR comment, Step Summary, SARIF (GitHub Security tab / IDE viewers), and the HTML report, each with severity, location, and the remediation guidance below.

How to fix

Reference the credential via env/keychain, not a literal value low effort

// .mcp.json
"env": { "API_KEY": "${MY_API_KEY}" }   // expanded from the environment, not committed

Rotate the exposed credential — assume it is compromised low effort

Triage

Suppress a confirmed non-issue with a committed .pullguardignore entry (pullguard ignore locally, or comment /pullguard ignore <fingerprint> <reason> on the PR — the fingerprint is printed in the PR comment’s Triage section). Entries support expiresAt for time-boxed snoozes.

Security findings at major or critical severity — and any critical finding — always surface: .pullguardignore cannot hide them. The reviewed paths that keep them visible are acknowledged (reviewed, stays in reports) and, for a confirmed false positive, a reasoned false_positive entry — visible and audited, excluded only from the merge block.