# 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.

- **Severity:** Low 3.5 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N`)
- **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 available:** No
- **Published:** 20 Nov 2025
- **Updated:** 20 Nov 2025
- **Also known as:** GHSA-c4gw-fqw8-f4wj

## 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 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2025-55123?

It affects 1 product.


Products: 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.

## 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](https://insights.sbomify.com/CVE-2016-9124/): Security feature bypass in Revive Adserver All versions before 3.2.3 (critical 9.8)
- [CVE-2016-9125](https://insights.sbomify.com/CVE-2016-9125/): Auth bypass in Revive Adserver All versions before 3.2.3 (critical 9.8)
- [CVE-2017-5830](https://insights.sbomify.com/CVE-2017-5830/): Deserialization in n/a (critical 9.8)
- [CVE-2016-9470](https://insights.sbomify.com/CVE-2016-9470/): Other in Revive Adserver All versions before 3.2.5 and 4.0.0 (critical 9.0)
- [CVE-2026-50741](https://insights.sbomify.com/CVE-2026-50741/): Code injection in Adserver (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-55123 and fix it if it is affected.

What it is: 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.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-55123 exists.

Affected product: Revive-Adserver Revive Adserver. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-55123/ (Markdown: https://insights.sbomify.com/CVE-2025-55123/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-55123
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-55123
- OSV: https://osv.dev/vulnerability/CVE-2025-55123

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-55123/
Summaries are generated and may contain mistakes; the official description above is the record.