# CVE-2019-25402: Comodo Dome Firewall 2.7.0 Cross-Site Scripting via login

> Unauthenticated attackers can inject malicious scripts via the login username field, potentially executing arbitrary JavaScript in victim browsers.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 19 Feb 2026
- **Updated:** 24 May 2026
- **Also known as:** GHSA-vjwf-9x67-fj96

## What is CVE-2019-25402?

CVE-2019-25402 is a medium-severity cross-site scripting vulnerability in Comodo Dome Firewall, published on 19 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Comodo Dome Firewall 2.7.0 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by submitting crafted input to the username parameter. Attackers can send POST requests to the login endpoint with script payloads in the username field to execute arbitrary JavaScript in users' browsers.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2019-25402?

It affects 1 product.


Products: Comodo Dome Firewall.

## How do I fix CVE-2019-25402?

No fix has been published for CVE-2019-25402 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-25402 being exploited?

There is no known exploitation of CVE-2019-25402 in the wild and no public exploit code.

## Other vulnerabilities in Comodo Dome Firewall

- [CVE-2019-25405](https://insights.sbomify.com/CVE-2019-25405/): Comodo Dome Firewall 2.7.0 Stored Cross-Site Scripting via license_activation (medium 5.3)
- [CVE-2019-25419](https://insights.sbomify.com/CVE-2019-25419/): Comodo Dome Firewall 2.7.0 Stored Cross-Site Scripting via schedule (medium 5.3)
- [CVE-2019-25422](https://insights.sbomify.com/CVE-2019-25422/): Comodo Dome Firewall 2.7.0 Cross-Site Scripting via vpnfw (medium 5.3)
- [CVE-2019-25403](https://insights.sbomify.com/CVE-2019-25403/): Comodo Dome Firewall 2.7.0 Stored Cross-Site Scripting via admin_profiles (medium 5.1)
- [CVE-2019-25404](https://insights.sbomify.com/CVE-2019-25404/): Comodo Dome Firewall 2.7.0 Stored Cross-Site Scripting via admins (medium 5.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-25402 and fix it if it is affected.

What it is: CVE-2019-25402 is a medium-severity cross-site scripting vulnerability in Comodo Dome Firewall, published on 19 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-25402 in the wild and no public exploit code.

Affected product: Comodo Dome Firewall. 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-2019-25402/ (Markdown: https://insights.sbomify.com/CVE-2019-25402/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-25402
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-25402
- OSV: https://osv.dev/vulnerability/CVE-2019-25402

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-25402/
Summaries are generated and may contain mistakes; the official description above is the record.