# CVE-2023-46743: The same file cannot be opened with different rights

> Users with view-only rights can edit documents if another user previously opened them in edit mode, due to cached write permissions.

- **Severity:** High 7.4 (`CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 9 Nov 2023
- **Updated:** 4 Sep 2024
- **Also known as:** GHSA-mvq3-xxg2-rj57

## What is CVE-2023-46743?

CVE-2023-46743 is a high-severity missing authorization vulnerability in xwikisas application-collabora, published on 9 Nov 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

application-collabora is an integration of Collabora Online in XWiki. As part of the application use cases, depending on the rights that a user has over a document, they should be able to open the office attachments files in view or edit mode. Currently, if a user opens an attachment file in edit mode in collabora, this right will be preserved for all future users, until the editing session is closes, even if some of them have only view right. Collabora server is the one issuing this request and it seems that the `userCanWrite` query parameter is cached, even if, for example, token is not. This issue has been patched in version 1.3.

Weakness: CWE-276 (Incorrect Default Permissions)

## Which versions are affected by CVE-2023-46743?

It affects 1 product.


Products: Xwiki Application-Collabora.

## How do I fix CVE-2023-46743?

No fix has been published for CVE-2023-46743 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-46743 being exploited?

There is no known exploitation of CVE-2023-46743 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-46743 and fix it if it is affected.

What it is: CVE-2023-46743 is a high-severity missing authorization vulnerability in xwikisas application-collabora, published on 9 Nov 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-46743 in the wild and no public exploit code.

Affected product: xwikisas application-collabora. 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-2023-46743/ (Markdown: https://insights.sbomify.com/CVE-2023-46743/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-46743
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-46743
- OSV: https://osv.dev/vulnerability/CVE-2023-46743

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-46743/
Summaries are generated and may contain mistakes; the official description above is the record.