CWE · MITRE source
CWE-159Improper Handling of Invalid Use of Special Elements
The product does not properly filter, remove, quote, or otherwise manage the invalid use of special elements in user-controlled input, which could cause adverse effect on its behavior and integrity.
Last updated: 04 July 2026 11:13 UTC
Cumulative inbound coverage
How completely the frameworks we cross-walk collectively cover this — the verdict is the strongest single mapping (overlapping partials are not summed); breadth shows the corroboration behind it.
Collective: partial · 5 mapping(s) from 2 framework(s): ATT&CK 4 (partial) · OWASP-Web 1 (partial)
OWASP Top 10 for Web (2025)
This weakness contributes to A05:2025 Injection.
NIST 800-53 r5 controls that address this weakness (0)AI
| Control | Title | Family | Why it addresses this CWE |
|---|---|---|---|
| No NIST controls proposed yet. | |||
MITRE ATT&CK techniques this weakness enables
Our own two-way CWE↔ATT&CK cross-walk — a direct mapping with no public source (the CWE→CAPEC→ATT&CK chain leaves most top weaknesses, incl. XSS and SQLi, mapped to nothing). Drafted by Grok and spot-checked by Claude Opus 4.8.
Direction: ← other covers this;
→ this covers other (F/M/P = full / mostly /
partial).
Top CVEs of this weakness type, ranked by Risk Priority
| CVE | Risk | CVSS | EPSS | Published |
|---|---|---|---|---|
CVE-2019-9505 | 7.0 | 9.8 | 0.0345 | 2019-05-08 |
CVE-2021-21707 | 6.0 | 5.3 | 0.2595 | 2021-11-29 |
CVE-2020-1646 | 5.5 | 7.5 | 0.0101 | 2020-07-17 |
CVE-2020-1648 | 5.5 | 7.5 | 0.0128 | 2020-07-17 |
CVE-2020-1653 | 5.5 | 7.5 | 0.0159 | 2020-07-17 |
CVE-2026-35536 | 5.5 | 7.2 | 0.0024 | 2026-04-03 |
CVE-2020-29022 | 3.5 | 5.3 | 0.0080 | 2021-02-16 |
CVE-2021-42375 | 3.5 | 5.5 | 0.0038 | 2021-11-15 |
CVE-2024-51500 | 3.5 | 5.3 | 0.0040 | 2024-11-04 |
CVE-2026-2636 | 3.5 | 5.5 | 0.0041 | 2026-02-25 |
CVE-2026-29106 | 3.5 | 5.9 | 0.0015 | 2026-03-19 |
CVE-2025-61984 | 1.5 | 3.6 | 0.0021 | 2025-10-06 |