CVE-2025-55123 Cross-site scripting in Revive Adserver
Manager accounts can execute cross-site scripting attacks against their own advertiser users in Revive Adserver.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-55123?
CVE-2025-55123 is a low-severity cross-site scripting vulnerability in Revive-Adserver Revive Adserver, published on 20 Nov 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Improper neutralization of input in Revive Adserver 5.5.2 and 6.0.1 and earlier versions causes manager accounts to be able to craft XSS attacks to their own advertiser users.
Weakness: CWE-79
Which versions are affected by CVE-2025-55123?
It affects 1 product.
Products include Revive-Adserver Revive Adserver.
How do I fix CVE-2025-55123?
No fix has been published for CVE-2025-55123 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-55123 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-55123 exists.
Other vulnerabilities in Revive-Adserver Revive Adserver
- CVE-2016-9124 Security feature bypass in Revive Adserver All versions before 3.2.3
- CVE-2016-9125 Auth bypass in Revive Adserver All versions before 3.2.3
- CVE-2017-5830 Deserialization in n/a
- CVE-2016-9470 Other in Revive Adserver All versions before 3.2.5 and 4.0.0
- CVE-2026-50741 Code injection in Adserver
Sources
Also known as GHSA-c4gw-fqw8-f4wj.