CWE-159Improper Handling of Invalid Use of Special Elements

Abstraction: Class · CVEs in our corpus: 13

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: 15 October 2026 14:21 UTC

OWASP Top 10 for Web (2025)

This weakness contributes to A05:2025 Injection.

NIST 800-53 r5 controls PROPOSED for this weakness (0)AI-assisted

These are model PROPOSALS, not graded mappings. They come from controls_to_cwe_proposals, which carries no grade field at all; across the CWE pages 1,540 of 1,722 such associations (89%) have never been graded by anything. The heading said “address” until 2026-09-29, which asserted a relationship the data does not carry. Graded cross-walks are on the framework map, not here.

Control	Title	Family	Why it addresses this CWE
No NIST controls proposed yet.

Top CVEs of this weakness type, ranked by Risk Priority

CVE	Risk	CVSS	EPSS	Published
`CVE-2019-9505`	7.8	9.8	0.0345	2019-05-08
`CVE-2020-1653`	6.2	7.5	0.0159	2020-07-17
`CVE-2020-1648`	6.1	7.5	0.0128	2020-07-17
`CVE-2020-1646`	6.0	7.5	0.0101	2020-07-17
`CVE-2021-21707`	5.9	5.3	0.2595	2021-11-29
`CVE-2026-35536`	5.3	7.2	0.0029	2026-04-03
`CVE-2020-29022`	4.6	5.3	0.0083	2021-02-16
`CVE-2021-42375`	4.4	5.5	0.0041	2021-11-15
`CVE-2024-51500`	4.4	5.3	0.0042	2024-11-04
`CVE-2026-2636`	4.4	5.5	0.0043	2026-02-25
`CVE-2026-29106`	4.3	5.9	0.0025	2026-03-19
`CVE-2025-61984`	3.2	3.6	0.0045	2025-10-06