BaseFortify

Publication date: 2025-11-20

Last updated on: 2026-01-14

Assigner: HackerOne

Description

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 UI, potentially leading to confusion.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-11-20

Last Modified

2026-01-14

Generated

2026-07-06

AI Q&A

2025-11-20

EPSS Evaluated

2026-07-05

NVD

CVE-2025-55127

Affected Vendors & Products

Vendor	Product	Version / Range
aquaplatform	revive_adserver	From 6.0.0 (inc) to 6.0.3 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-156	The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as whitespace when they are sent to a downstream component.

Attack-Flow Graph

Executive Summary

This vulnerability involves improper neutralization of whitespace in usernames when adding new users. Specifically, usernames with leading or trailing whitespace can appear almost identical to legitimate usernames without whitespace when displayed in the user interface, which can cause confusion.

Impact Analysis

The vulnerability can lead to confusion or impersonation because usernames that differ only by whitespace may look the same to users. This could potentially be exploited to mislead users or bypass certain checks that do not account for whitespace differences.

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