Plastic Labs Honcho vulnerabilities
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Published CVEs affecting Plastic Labs Honcho: 1 record(s), with affected versions and fixes.
CVE-2026-108711
Medium · 4.3
CWE-863 Oct 11, 2026
Plastic Labs Honcho through 3.3.0 Incorrect Authorization via POST /v3/workspaces
Plastic Labs Honcho through 3.3.0 contains an incorrect authorization vulnerability that allows peer- or session-scoped API key holders to read workspace data because get_or_create_workspace checks only the workspace claim. Attackers can submit their parent workspace name to the POST /v3/workspaces endpoint to retrieve workspace metadata and configuration, including custom_instructions, reserved for workspace or admin keys.