GHSA-rj4g-rqgh-rx9h
Medium · 5.3Ech0 comment model's Email field returned on public /api/comments endpoints
CVSS
5.3
EPSS
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Published
May 7, 2026
CISA due date
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The record
The `Comment` model serializes its `Email` field through the public comment-listing API. `internal/model/comment/comment.go:33` uses `json:"email"`, while adjacent PII fields (`IPHash`, `UserAgent`) correctly use `json:"-"`. The public endpoints `GET /api/comments?echo_id=X` and `GET /api/comments/public?limit=N` both live on `PublicRouterGroup` with no authentication. Alice retrieves every guest commenter's email address on the instance with a few unauthenticated HTTP calls.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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