# CVE-2025-53504: Cross-site scripting in Group-Office

> Attackers can execute arbitrary scripts in user browsers via XSS in Group-Office, requiring an upgrade to secure versions.

- **Severity:** Medium 4.8 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA: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:** 21 Aug 2025
- **Updated:** 21 Aug 2025
- **Also known as:** GHSA-5j42-cmx3-349c

## What is CVE-2025-53504?

CVE-2025-53504 is a medium-severity cross-site scripting vulnerability in Intermesh BV Group-Office, published on 21 Aug 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

Group-Office versions prior to 6.8.119 and prior to 25.0.20 provided by Intermesh BV contain a cross-site scripting vulnerability. If this vulnerability is exploited, an arbitrary script may be executed in the user's web browser.

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

## Which versions are affected by CVE-2025-53504?

It affects 1 product.


Products: Group-Office Group Office.

## How do I fix CVE-2025-53504?

No fix has been published for CVE-2025-53504 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-53504 being exploited?

There is no known exploitation of CVE-2025-53504 in the wild and no public exploit code.

## Other vulnerabilities in Intermesh BV Group-Office

- [CVE-2026-25512](https://insights.sbomify.com/CVE-2026-25512/): Group-Office is vulnerable to RCE due to Command Injection via TNEF Attachment Handler (critical 9.4)
- [CVE-2026-25134](https://insights.sbomify.com/CVE-2026-25134/): Group-Office Argument Injection in MaintenanceController::actionZipLanguage (critical 9.4)
- [CVE-2025-63406](https://insights.sbomify.com/CVE-2025-63406/): Code injection in n/a (high 8.8)
- [CVE-2026-25511](https://insights.sbomify.com/CVE-2026-25511/): Group-Office is vulnerable to SSRF and File Read in WOPI service discovery (high 8.2)
- [CVE-2023-46730](https://insights.sbomify.com/CVE-2023-46730/): Server-Side Request Forgery in groupoffice (high 7.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-53504 and fix it if it is affected.

What it is: CVE-2025-53504 is a medium-severity cross-site scripting vulnerability in Intermesh BV Group-Office, published on 21 Aug 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-53504 in the wild and no public exploit code.

Affected product: Intermesh BV Group-Office. 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-2025-53504/ (Markdown: https://insights.sbomify.com/CVE-2025-53504/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-53504
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-53504
- OSV: https://osv.dev/vulnerability/CVE-2025-53504

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-53504/
Summaries are generated and may contain mistakes; the official description above is the record.