# CVE-2026-25511: Group-Office is vulnerable to SSRF and File Read in WOPI service discovery

> Authenticated administrators can exploit SSRF in WOPI discovery to read internal files and exfiltrate data via debug output.

- **Severity:** High 8.2 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 Feb 2026
- **Updated:** 5 Feb 2026
- **Also known as:** GHSA-r9v4-jm2r-r9pm

## What is CVE-2026-25511?

CVE-2026-25511 is a high-severity server-side request forgery vulnerability in Intermesh groupoffice, published on 4 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.150, 25.0.82, and 26.0.5, an authenticated user within the System Administrator group can trigger a full SSRF via the WOPI service discovery URL, including access to internal hosts/ports. The SSRF response body can be exfiltrated via the built‑in debug system, turning it into a visible SSRF. This also allows full server-side file read. This issue has been patched in versions 6.8.150, 25.0.82, and 26.0.5.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2026-25511?

It affects 1 product.


Products: Group-Office Group Office.

## How do I fix CVE-2026-25511?

No fix has been published for CVE-2026-25511 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-25511 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-25511 exists.

## Other vulnerabilities in Intermesh groupoffice

- [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-2023-46730](https://insights.sbomify.com/CVE-2023-46730/): Server-Side Request Forgery in groupoffice (high 7.4)
- [CVE-2025-25191](https://insights.sbomify.com/CVE-2025-25191/): Group-Office has a Stored XSS Vulnerability via user's name field (medium 6.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-25511 and fix it if it is affected.

What it is: CVE-2026-25511 is a high-severity server-side request forgery vulnerability in Intermesh groupoffice, published on 4 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-25511 exists.

Affected product: Intermesh groupoffice. 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-2026-25511/ (Markdown: https://insights.sbomify.com/CVE-2026-25511/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-25511
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-25511
- OSV: https://osv.dev/vulnerability/CVE-2026-25511

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-25511/
Summaries are generated and may contain mistakes; the official description above is the record.