Reflected cross-site scripting (XSS)

Description

The web application dynamically generates web content without validating the source of the potentially untrusted data.

Impact

Generate web pages that could contain malicious scripts injected into untrusted data.

Recommendation

Perform input data validations on the server-side to avoid common script injection attacks.

Threat

Authenticated attacker from the Internet.

Expected Remediation Time

⌚ minutes.

Score

Default score using CVSS 3.1. It may change depending on the context of the src.

Base

• Attack vector: N
• Attack complexity: L
• Privileges required: N
• User interaction: R
• Scope: C
• Confidentiality: N
• Integrity: L
• Availability: N

Temporal

• Exploit code madurity: X
• Remediation level: X
• Report confidence: X

Result

• Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N/E:X/RL:X/RC:X
• Score:
  • Base: 4.7
  • Temporal: 4.7
• Severity:
  • Base: Medium
  • Temporal: Medium

Requirements

• 029.Cookies with security attributes
• 173.Discard unsafe inputs

Fixes

• PHP
• Go
• Java
• C-Sharp
• Ruby
• Elixir
• TypeScript
• Python

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