CVE-2025-55127 Other in Revive Adserver

Medium 5.4 Published Updated

Attackers can create usernames with whitespace to impersonate legitimate users in the UI, potentially bypassing security checks or causing confusion.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2025-55127?

CVE-2025-55127 is a medium-severity vulnerability in Revive Adserver, published on 20 Nov 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official 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.

Weakness: CWE-156

Which versions are affected by CVE-2025-55127?

It affects 1 product.

Products include Aquaplatform Revive Adserver.

How do I fix CVE-2025-55127?

No fix has been published for CVE-2025-55127 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-55127 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-55127 exists.

Sources

Also known as GHSA-r3jx-6xf2-cch5.

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