# CVE-2025-53828: SharePoint for ownCloud 10 is vulnerable to Server-Side Request Forgery (SSRF)

> An attacker with admin privileges can exploit an SSRF vulnerability in the SharePoint plugin to execute arbitrary code on the ownCloud server.

- **Severity:** High 8.5 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Jul 2026
- **Updated:** 8 Jul 2026

## What is CVE-2025-53828?

CVE-2025-53828 is a high-severity server-side request forgery vulnerability in owncloud SharePoint, published on 6 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

SharePoint for ownCloud is an application for using SharePoint with the file storage, synchronization, and sharing application ownCloud Classic. In SharePoint for ownCloud prior to version 0.4.1, which corresponds to ownCloud 10 prior to 10.15.3, an attacker with administrative privileges can use a SSRF vulnerability in the SharePoint app to execute arbitrary code on the system. Upgrade ownCloud 10 to version 10.15.3 or later to receive SharePoint for ownCloud 0.4.1, the fixed version.

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

## Which versions are affected by CVE-2025-53828?


## How do I fix CVE-2025-53828?

No fix has been published for CVE-2025-53828 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-53828 being exploited?

There is no known exploitation of CVE-2025-53828 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-53828 and fix it if it is affected.

What it is: CVE-2025-53828 is a high-severity server-side request forgery vulnerability in owncloud SharePoint, published on 6 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-53828 in the wild and no public exploit code.

Affected product: owncloud SharePoint. 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-2025-53828/ (Markdown: https://insights.sbomify.com/CVE-2025-53828/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-53828
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-53828
- OSV: https://osv.dev/vulnerability/CVE-2025-53828

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-53828/
Summaries are generated and may contain mistakes; the official description above is the record.