CVE-2026-56763 — Hono - Prototype Pollution via __proto__ Key in parseBody with dot Option
Hono before 4.12.7 allows __proto__ key in parseBody with dot option enabled, permitting specially crafted form field names to create objects with __proto__ properties. When par…
Published: 2026-07-11 · CVSS: 6.3 · CVSS 4.0
Hono before 4.12.7 allows __proto__ key in parseBody with dot option enabled, permitting specially crafted form field names to create objects with __proto__ properties. When parsed results are merged into regular JavaScript objects using unsafe merge patterns, attackers can exploit this to achieve prototype pollution and modify object behavior.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7