CVE-2025-55127
HackerOne community member Dao Hoang Anh (yoyomiski) has reported an improper neutralization of...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2025-55127- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-156
- Updated
- 2026-11-02
EUVDEUVD-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 UI, potentially leading to confusion.
- Record
EUVD-2025-198344- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-r3jx-6xf2-cch5
HackerOne community member Dao Hoang Anh (yoyomiski) has reported an improper neutralization of...
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.
- Record
GHSA-r3jx-6xf2-cch5- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-156
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2025-55127- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-156
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2025-55127- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-55127 is a medium vulnerability (CVSS 5.4) in Aquaplatform Revive Adserver, published November 20, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.25%, the 16th percentile. No source names a fixed version.