CWE · MITRE source

CWE-87Improper Neutralization of Alternate XSS Syntax

Abstraction: Variant · CVEs in our corpus: 57

The product does not neutralize or incorrectly neutralizes user-controlled input for alternate script syntax.

Last updated: 14 October 2026 20:41 UTC

Control responseHuman-reviewed

Answering this weakness across the control lifecycle, from our framework cross-walks.

Prevent

Stop it (NIST 800-53 / CSF Protect)

SA-11 Developer Testing and Evaluation
SA-3 System Development Life Cycle
PR.PS-06
SI-10 Information Input Validation

Detect

Catch it (CSF Detect / Respond)

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Harden

Shrink the surface (DISA STIG)

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Validate

Prove the fix (OWASP ASVS)

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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-2023-35161`	7.2	9.6	0.0238	2023-06-23
`CVE-2023-35156`	7.1	9.6	0.0208	2023-06-23
`CVE-2023-35158`	7.1	9.6	0.0205	2023-06-23
`CVE-2023-35159`	7.1	9.6	0.0218	2023-06-23
`CVE-2023-35160`	7.1	9.6	0.0227	2023-06-23
`CVE-2026-42235`	6.8	9.6	0.0050	2026-05-04
`CVE-2026-33506`	6.3	8.8	0.0042	2026-03-26
`CVE-2026-33510`	6.2	8.8	0.0033	2026-04-06
`CVE-2026-55237`	6.2	8.8	0.0032	2026-06-18
`CVE-2025-49137`	6.0	8.5	0.0027	2025-06-09
`CVE-2026-40321`	5.6	8.0	0.0036	2026-04-17
`CVE-2026-35534`	5.4	7.6	0.0029	2026-04-07
`CVE-2025-55291`	5.3	7.1	0.0023	2025-08-18
`CVE-2026-46492`	5.3	7.2	0.0034	2026-06-09
`CVE-2025-62414`	5.0	6.9	0.0028	2025-10-16
`CVE-2025-62415`	5.0	6.9	0.0028	2025-10-16
`CVE-2025-62418`	5.0	6.9	0.0028	2025-10-16
`CVE-2022-36033`	4.9	6.1	0.0154	2022-08-29
`CVE-2024-3162`	4.8	6.4	0.0032	2024-04-03
`CVE-2024-2750`	4.8	6.4	0.0032	2024-05-02
`CVE-2024-2618`	4.8	6.4	0.0032	2024-05-24
`CVE-2024-4459`	4.8	6.4	0.0034	2024-06-06
`CVE-2024-8505`	4.8	6.4	0.0039	2024-10-02
`CVE-2025-14732`	4.8	6.4	0.0034	2026-04-08
`CVE-2022-39295`	4.7	6.1	0.0070	2022-10-13