CVE-2021-31553

An issue was discovered in the CheckUser extension for MediaWiki through 1.35.2. MediaWiki usernames with trailing whitespace could be stored in the culog database table such that denial of service occurred for certain CheckUser extension pages and functionality. For example, the attacker could...

CVE-2019-18857

darylldoyle svg-sanitizer before 0.12.0 mishandles script and data values in attributes, as demonstrated by unexpected whitespace such as in the javascript :alert substring...

CVE-2023-49799

nuxt-api-party is an open source module to proxy API requests. nuxt-api-party attempts to check if the user has passed an absolute URL to prevent the aforementioned attack. This has been recently changed to use the regular expression ^https?://, however this regular expression can be bypassed by ...

CVE-2023-40194

An arbitrary file creation vulnerability exists in the Javascript exportDataObject API of Foxit Reader 12.1.3.15356 due to mistreatment of whitespace characters. A specially crafted malicious file can create files at arbitrary locations, which can lead to arbitrary code execution. An attacker nee...

CVE-2022-31180

Shescape is a simple shell escape package for JavaScript. Affected versions were found to have insufficient escaping of white space when interpolating output. This issue only impacts users that use the escape or escapeAll functions with the interpolation option set to true. The result is that if ...

PT-2026-28792

Name of the Vulnerable Software and Affected Versions OWASP Core Rule Set CRS versions prior to 3.3.9 and prior to 4.25.0 Description The OWASP Core Rule Set CRS contains a flaw where whitespace padding in filenames can bypass file upload extension checks. This allows the upload of dangerous file...

PT-2026-5655

Name of the Vulnerable Software and Affected Versions libxml2 versions affected versions not specified Description A memory leak exists in the interactive shell of the xmllint utility. When a user provides input containing only whitespace, the program does not release the allocated memory buffer,...

curl: Functional Regression in Digest Authentication: Failure to handle optional spaces and escaped quotes

Summary A recent migration of the Digest authentication parsing logic to the curlxstr strparse API introduced two functional parsing regressions in lib/vauth/digest.c. 1. Optional Whitespace OWS Handling The current implementation fails to skip optional whitespace after comma delimiters in...

CVE-2025-41694

A low privileged remote attacker can run the webshell with an empty command containing whitespace. The server will then block until it receives more data, resulting in a DoS condition of the websserver...

CVE-2025-41694 Authenticated Denial-of-Service via Webshell

A low privileged remote attacker can run the webshell with an empty command containing whitespace. The server will then block until it receives more data, resulting in a DoS condition of the websserver...

PT-2025-49813

A low privileged remote attacker can run the webshell with an empty command containing whitespace. The server will then block until it receives more data, resulting in a DoS condition of the websserver...

CVE-2025-55127

HackerOne community member Dao Hoang Anh yoyomiski has reported an improper neutralization of whitespace in the username when adding new users. A username with leading or trailing whitespace could be virtually indistinguishable from its legitimate counterpart when the username is displayed in the...

EUVD-2025-198344

HackerOne community member Dao Hoang Anh yoyomiski has reported an improper neutralization of whitespace in the username when adding new users. A username with leading or trailing whitespace could be virtually indistinguishable from its legitimate counterpart when the username is displayed in the...

CVE-2025-55127

HackerOne community member Dao Hoang Anh yoyomiski has reported an improper neutralization of whitespace in the username when adding new users. A username with leading or trailing whitespace could be virtually indistinguishable from its legitimate counterpart when the username is displayed in the...

CVE-2025-55127

HackerOne community member Dao Hoang Anh yoyomiski has reported an improper neutralization of whitespace in the username when adding new users. A username with leading or trailing whitespace could be virtually indistinguishable from its legitimate counterpart when the username is displayed in the...

CVE-2025-55127

HackerOne community member Dao Hoang Anh yoyomiski has reported an improper neutralization of whitespace in the username when adding new users. A username with leading or trailing whitespace could be virtually indistinguishable from its legitimate counterpart when the username is displayed in the...

CVE-2025-55127

Affected software: Revive Adserver. Vulnerability: Improper neutralization/validation of whitespace in usernames, allowing leading or trailing spaces. The UI does not visually distinguish such usernames from legitimate ones, per the HackerOne report and related sources. Root cause (as stated): Us...

CVE-2025-55127

HackerOne community member Dao Hoang Anh yoyomiski has reported an improper neutralization of whitespace in the username when adding new users. A username with leading or trailing whitespace could be virtually indistinguishable from its legitimate counterpart when the username is displayed in the...

PT-2025-47625

HackerOne community member Dao Hoang Anh yoyomiski has reported an improper neutralization of whitespace in the username when adding new users. A username with leading or trailing whitespace could be virtually indistinguishable from its legitimate counterpart when the username is displayed in the...

Improper Neutralization

Overview chrome-devtools-frontend is a Chrome DevTools UI Affected versions of this package are vulnerable to Improper Neutralization due to insufficient sanitization of special whitespace characters in the escapeStringWin function. An attacker can execute arbitrary code by crafting malicious inp...