VYPR

CWE-692

Incomplete Denylist to Cross-Site Scripting

CompoundDraft

Description

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.

Hierarchy (View 1000)

Parents

Children

none

Related attack patterns (CAPEC)

CAPEC-120 · CAPEC-267 · CAPEC-71 · CAPEC-80 · CAPEC-85

CVEs mapped to this weakness (10)

  • CVE-2025-20240MedSep 24, 2025
    risk 0.40cvss 6.1epss 0.00

    A vulnerability in the Web Authentication feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to conduct a reflected cross-site scripting attack (XSS) on an affected device. This vulnerability is due to improper sanitization of user-supplied…

  • CVE-2024-52305MedNov 13, 2024
    risk 0.35cvss 6.5epss 0.00

    UnoPim is an open-source Product Information Management (PIM) system built on the Laravel framework. A vulnerability exists in the Create User process, allowing the creation of a new admin account with an option to upload a profile image. An attacker can upload a malicious SVG…

  • CVE-2023-26047MedMar 3, 2023
    risk 0.35cvss 6.5epss 0.01

    teler-waf is a Go HTTP middleware that provides teler IDS functionality to protect against web-based attacks. In teler-waf prior to version v0.2.0 is vulnerable to a bypass attack when a specific case-sensitive hex entities payload with special characters such as CR/LF and…

  • CVE-2026-71478MedAug 6, 2026
    risk 0.33cvss 6.1epss 0.00

    league/commonmark is a PHP library for parsing and rendering CommonMark Markdown. From 1.5.0 until 2.9.0, the AttributesExtension's href and src unsafe-link filter can be bypassed by embedding control bytes, such as a tab, carriage return, line feed, or leading C0 control…

  • CVE-2024-30924MedApr 18, 2024
    risk 0.30cvss 4.6epss 0.00

    Cross Site Scripting vulnerability in DerbyNet v9.0 and below allows attackers to execute arbitrary code via the checkin.php component.

  • CVE-2025-53904LowJul 16, 2025
    risk 0.08cvss epss 0.00

    The Scratch Channel is a news website that is under development as of time of this writing. The file `/api/admin.js` contains code that could make the website vulnerable to cross-site scripting. No known patches exist as of time of publication.

  • CVE-2024-42214MedJul 17, 2026
    risk 0.00cvss 5.3epss 0.00

    HCL Aftermarket EPC is vulnerable to attack since HTTP OPTIONS method is enabled on this web server. The OPTIONS method provides a list of the methods that are supported by the Web server which allows an attacker to narrow and intensify their efforts.

  • CVE-2024-23569MedJul 17, 2026
    risk 0.00cvss 4.3epss 0.00

    HCL Aftermarket EPC is vulnerable to attack since the server is not configured with “X-XSS-Protection" header

  • CVE-2026-15295MedJul 10, 2026
    risk 0.00cvss 4.4epss 0.00

    The WordPress Infinite Scroll – Ajax Load More plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 7.0.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated…

  • CVE-2025-49590MedJun 18, 2025
    risk 0.00cvss 6.1epss 0.00

    CryptPad is a collaboration suite. Prior to version 2025.3.0, the "Link Bouncer" functionality attempts to filter javascript URIs to prevent Cross-Site Scripting (XSS), however this can be bypassed. There is an "early allow" code path that happens before the URI's…