# CVE-2023-34088: Collabora Online has Stored Cross-Site-Scripting vulnerability in admin interface

> Attackers can inject scripts via document names to steal admin JWT tokens in Collabora Online, requiring an upgrade to patch.

- **Severity:** High 8.7 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A: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:** 31 May 2023
- **Updated:** 9 Jan 2025
- **Also known as:** GHSA-7582-pwfh-3pwr

## What is CVE-2023-34088?

CVE-2023-34088 is a high-severity cross-site scripting vulnerability in CollaboraOnline online, published on 31 May 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Collabora Online is a collaborative online office suite. A stored cross-site scripting (XSS) vulnerability was found in Collabora Online prior to versions 22.05.13, 21.11.9.1, and 6.4.27. An attacker could create a document with an XSS payload as a document name. Later, if an administrator opened the admin console and navigated to the history page, the document name was injected as unescaped HTML and executed as a script inside the context of the admin console. The administrator JSON web token (JWT) used for the websocket connection could be leaked through this flaw. Users should upgrade to Collabora Online 22.05.13 or higher; Collabora Online 21.11.9.1 or higher; Collabora Online 6.4.27 or higher to receive a patch.

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

## Which versions are affected by CVE-2023-34088?

It affects 1 product.


Products: Collaboraoffice Collabora Online.

## How do I fix CVE-2023-34088?

No fix has been published for CVE-2023-34088 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-34088 being exploited?

There is no known exploitation of CVE-2023-34088 in the wild and no public exploit code.

## Other vulnerabilities in CollaboraOnline online

- [CVE-2023-48314](https://insights.sbomify.com/CVE-2023-48314/): Unescaped passing of the request URL in Collabora Online (high 7.1)
- [CVE-2024-29182](https://insights.sbomify.com/CVE-2024-29182/): Collabora Online Stored Cross-Site-Scripting vulnerability via tooltip (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-34088 and fix it if it is affected.

What it is: CVE-2023-34088 is a high-severity cross-site scripting vulnerability in CollaboraOnline online, published on 31 May 2023. 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-2023-34088 in the wild and no public exploit code.

Affected product: CollaboraOnline online. 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-2023-34088/ (Markdown: https://insights.sbomify.com/CVE-2023-34088/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-34088
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-34088
- OSV: https://osv.dev/vulnerability/CVE-2023-34088

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-34088/
Summaries are generated and may contain mistakes; the official description above is the record.