Insecure or unset HTTP headers - X-XSS Protection

Insecure or unset HTTP headers - X-XSS Protection

Description

The application uses the X-XSS Protection header considered deprecated. The use of this header may lead to stored XSS vulnerabilities.

Impact

Increase the chance of exploiting a stored XSS.

Recommendation

Disable the X-XSS Protection filter in the server responses. Instead, define security policies using CSP Header.

Threat

Unauthorized attacker from the Internet.

Expected Remediation Time

⌚ 30 minutes.

Score

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

Base

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

Temporal

  • Exploit code maturity: P
  • Remediation level: O
  • Report confidence: X

Result

  • Vector string: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:X
  • Score:
    • Base: 4.2
    • Temporal: 3.8
  • Severity:
    • Base: Medium
    • Temporal: Low

Score 4.0

Default score using CVSS 4.0. It may change depending on the context of the src.

Base 4.0

  • Attack vector: N
  • Attack complexity: H
  • Attack Requirements: N
  • Privileges required: N
  • User interaction: A
  • Confidentiality (VC): L
  • Integrity (VI): L
  • Availability (VA): N
  • Confidentiality (SC): N
  • Integrity (SI): N
  • Availability (SA): N

Threat 4.0

  • Exploit maturity: P

Result 4.0

  • Vector string: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
  • Score:
    • CVSS-BT: 1.2
  • Severity:
    • CVSS-BT: Low

Requirements

Fixes

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