Gold Open Source
ExplorePackagesVulnerabilitiesCWEsMCP ServersScan
Login
Gold Open Source

The authoritative source for production-ready open-source components. Every package, container image, AI model, and MCP server undergoes rigorous verification for security, malware, and license compliance.

Explore Gold

  • Explore Everything
  • Packages
  • Gold Certified Packages
  • Container Images
  • AI Models
  • MCP Servers
  • Agent Skills
  • Chip Manufacturers

Security Data & Tools

  • Scan Your Dependencies
  • Trending Threats
  • Threat RSS Feeds
  • CVE Database
  • Actively Exploited (KEV)
  • SGZ Zero-Days
  • CWE Index
  • MITRE ATT&CK
  • Malicious Packages
  • Security Glossary
  • Supply-Chain Report
  • Developers (API & Badge)
  • Chrome Extension
  • Credits & Data Sources

Products

  • The Platform
  • ESSCM
  • Portal
  • TPRM
  • OSM
  • Cowork
  • Code / Runner
  • Guard

Use Cases

  • Know Your Software
  • Auto-Fix Vulnerabilities
  • Asset Discovery
  • AI Governance
  • MCP Server Security
  • Supply Chain Compliance
  • Zero-Day Discovery
  • All Use Cases

Company

  • About
  • Pricing
  • Blog
  • Documentation
  • Safeguard Academy
  • Contact
  • Privacy Policy
  • Terms of Service

© 2026 Gold Open Source. All rights reserved.

Built with care bySafeguard
Home/CWEs/CWE-177
Common Weakness Enumeration

CWE-177: Improper Handling of URL Encoding (Hex Encoding)

ShareXLinkedInRedditHN

The product does not properly handle when all or part of an input has been URL encoded.

Abstraction
Variant
Related CVEs
0

▪References & documentation

https://cwe.mitre.org/data/definitions/177.htmlNVD CWE listing

▪ How attackers exploit CWE-177

MITRE ATT&CK techniques associated with this weakness class (mapped via MITRE CAPEC). A vulnerability of this type could let an adversary carry out:

T1027Obfuscated Files or Informationstealth

▪ Related CVEs

No CVEs in the Gold index currently reference CWE-177. New matches appear here as the crawler indexes them.