CWE-75

Class Abstraction Level
Pillar — Highest-level weakness category
Class — Abstract, language-independent
Base — Specific enough to detect
Variant — Tied to specific technology
Compound — Requires multiple weaknesses Draft MITRE CWE Status
Stable — Fully reviewed and complete
Draft — Under development, may change
Incomplete — Partially defined by MITRE
Deprecated — No longer recommended
Obsolete — Replaced by another CWE
Failure to Sanitize Special Elements into a Different Plane (Special Element Injection)

Description

The product does not adequately filter user-controlled input for special elements with control implications.

Top Monitored CVEs

CVE-2021-39174
HIGH
8.8 3.9%
2021-08-27

Consequences

Integrity, Confidentiality, Availability — Modify Application Data, Execute Unauthorized Code or Commands

Mitigations

Phase: Requirements

Programming languages and supporting technologies might be chosen which are not subject to these issues.

Phase: Implementation

Utilize an appropriate mix of allowlist and denylist parsing to filter special element syntax from all input.