# CVE-2026-63147: Omnispace Agora Project < 26.10.0 Stored XSS via Uploaded File Name

> Authenticated attackers can execute arbitrary scripts in other users' browsers by uploading files with malicious filenames in Omnispace Agora Project.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/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:** 13 Oct 2026
- **Updated:** 27 Oct 2026
- **Also known as:** GHSA-p4qp-qp77-4vr9

## What is CVE-2026-63147?

CVE-2026-63147 is a medium-severity cross-site scripting vulnerability in Omnispace Agora Project, published on 13 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Omnispace Agora Project before 26.10.0 contains a stored cross-site scripting vulnerability that allows authenticated users to inject malicious script by uploading a file with HTML/script markup embedded in its filename, which bypasses the paramFilter since uploaded-file names arrive through $_FILES rather than $_GET/$_POST. Attackers can upload a file with a crafted name such as an SVG onload payload to have the unsanitized filename stored and later rendered to other users, resulting in script execution in their browsers.

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

## Which versions are affected by CVE-2026-63147?


## How do I fix CVE-2026-63147?

No fix has been published for CVE-2026-63147 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-63147 being exploited?

There is no known exploitation of CVE-2026-63147 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-63147 and fix it if it is affected.

What it is: CVE-2026-63147 is a medium-severity cross-site scripting vulnerability in Omnispace Agora Project, published on 13 Oct 2026. 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-2026-63147 in the wild and no public exploit code.

Affected product: Omnispace Agora Project. 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-2026-63147/ (Markdown: https://insights.sbomify.com/CVE-2026-63147/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-63147
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-63147
- OSV: https://osv.dev/vulnerability/CVE-2026-63147

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-63147/
Summaries are generated and may contain mistakes; the official description above is the record.