SEPTEMBER 18, 2026
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Case File

CVE-2026-56763

MEDIUM · CVSS 4.8 EPSS 0.18% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-11 · Last synced 2026-08-10

CyberRota Analysis

AI-Generated

Hono versions prior to 4.12.7 are vulnerable to prototype pollution due to improper handling of the __proto__ key in form field names when the dot option is enabled. This flaw allows attackers to manipulate object behavior by merging parsed results into existing JavaScript objects using unsafe patterns. Developers and organizations utilizing Hono in their Java applications should prioritize patching to mitigate potential exploitation risks.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit
GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-56763
Severity
MEDIUM
CVSS
4.8
EPSS
0.18%
Java

Original NVD Description

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.