CWE-692Incomplete Denylist to Cross-Site Scripting

Abstraction: Compound · CVEs in our corpus: 11

The product uses a denylist-based protection mechanism to defend against XSS attacks, but the denylist is incomplete, allowing XSS variants to succeed.

While XSS might seem simple to prevent, web browsers vary so widely in how they parse web pages, that a denylist cannot keep track of all the variations. The "XSS Cheat Sheet" [REF-714] contains a large number of attacks that are intended to bypass incomplete denylists.

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)

PR.PS-06
SI-10 Information Input Validation
SA-8 Security and Privacy Engineering Principles

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-2023-26047`	5.2	6.5	0.0052	2023-03-03
`CVE-2024-52305`	5.0	6.5	0.0019	2024-11-13
`CVE-2025-49590`	4.6	6.1	0.0033	2025-06-18
`CVE-2026-71478`	4.6	6.1	0.0036	2026-08-06
`CVE-2025-20240`	4.5	6.1	0.0029	2025-09-24
`CVE-2024-42214`	4.4	5.3	0.0033	2026-07-17
`CVE-2026-107396`	4.0	5.4	0.0019	2026-10-08
`CVE-2024-30924`	3.6	4.6	0.0034	2024-04-18
`CVE-2024-23569`	3.6	4.3	0.0030	2026-07-17
`CVE-2026-15295`	3.4	4.4	0.0024	2026-07-10