# CVE-2025-22449: Access control flaw for team admins allows unauthorized team additions > Team admins can bypass invite restrictions by making their team public, allowing unauthorized user additions to the team. - **Severity:** Low 3.8 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N`) - **Exploited in the wild:** Not known - **Login needed:** An administrator - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 9 Jan 2025 - **Updated:** 9 Jan 2025 - **Also known as:** GHSA-q8fg-cp3q-5jwm, GO-2025-3377 ## What is CVE-2025-22449? CVE-2025-22449 is a low-severity missing authorization vulnerability in Mattermost Mattermost Server, published on 9 Jan 2025. An attacker needs administrator access to exploit it, with no action from the victim. ### Official description Mattermost versions 9.11.x <= 9.11.5 fail to enforce invite permissions, which allows team admins, with no permission to invite users to their team, to invite users by updating the "allow_open_invite" field via making their team public. Weakness: CWE-863 (Incorrect Authorization) ## Which versions are affected by CVE-2025-22449? 8 open source packages ship an affected version, including github.com/mattermost/mattermost/server/v8, github.com/mattermost/mattermost-server and github.com/mattermost/mattermost-server/v5. It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `github.com/mattermost/mattermost/server/v8` | Go | All versions | 8.0.0-20250102081831-64c566a8280b | | `github.com/mattermost/mattermost/server/v8` | Go | All versions | 8.0.0-20250102081831-64c566a8280b | | `github.com/mattermost/mattermost/server/v8` | Go | All versions | 8.0.0-20250102081831-64c566a8280b | | `github.com/mattermost/mattermost/server/v8` | Go | From 9.11.0 | 9.11.6 | | `github.com/mattermost/mattermost/server/v8` | Go | From 9.11.0 | 9.11.6 | | `github.com/mattermost/mattermost-server` | Go | From 9.11.0+incompatible | None | | `github.com/mattermost/mattermost-server/v5` | Go | All versions | None | | `github.com/mattermost/mattermost-server/v6` | Go | All versions | None | Products: Mattermost Mattermost Server. ## How do I fix CVE-2025-22449? Upgrade github.com/mattermost/mattermost/server/v8 to a fixed version for your release line: 8.0.0-20250102081831-64c566a8280b or 9.11.6. ## Is CVE-2025-22449 being exploited? There is no known exploitation of CVE-2025-22449 in the wild and no public exploit code. ## Other vulnerabilities in Mattermost Mattermost Server - [CVE-2025-12419](https://insights.sbomify.com/CVE-2025-12419/): Account takeover on OAuth/OpenID-enabled servers (critical 9.9) - [CVE-2025-12421](https://insights.sbomify.com/CVE-2025-12421/): Account Takeover via Code Exchange Endpoint (critical 9.9) - [CVE-2025-4981](https://insights.sbomify.com/CVE-2025-4981/): Path Traversal Leading to RCE by Any Authenticated Mattermost User (critical 9.9) - [CVE-2025-20051](https://insights.sbomify.com/CVE-2025-20051/): Arbitrary file read via block duplication in Mattermost Boards (critical 9.9) - [CVE-2025-25279](https://insights.sbomify.com/CVE-2025-25279/): Arbitrary file read in Mattermost Boards via import & export board archive (critical 9.9) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2025-22449 and fix it if it is affected. What it is: CVE-2025-22449 is a low-severity missing authorization vulnerability in Mattermost Mattermost Server, published on 9 Jan 2025. An attacker needs administrator access to exploit it, with no action from the victim. Exploitation: There is no known exploitation of CVE-2025-22449 in the wild and no public exploit code. Affected packages and fixed versions: - github.com/mattermost/mattermost/server/v8 (Go): affected all versions; fixed in 8.0.0-20250102081831-64c566a8280b - github.com/mattermost/mattermost/server/v8 (Go): affected all versions; fixed in 8.0.0-20250102081831-64c566a8280b - github.com/mattermost/mattermost/server/v8 (Go): affected all versions; fixed in 8.0.0-20250102081831-64c566a8280b - github.com/mattermost/mattermost/server/v8 (Go): affected from 9.11.0; fixed in 9.11.6 - github.com/mattermost/mattermost/server/v8 (Go): affected from 9.11.0; fixed in 9.11.6 - github.com/mattermost/mattermost-server (Go): affected from 9.11.0+incompatible; no fix listed - github.com/mattermost/mattermost-server/v5 (Go): affected all versions; no fix listed - github.com/mattermost/mattermost-server/v6 (Go): affected all versions; no fix listed 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-2025-22449/ (Markdown: https://insights.sbomify.com/CVE-2025-22449/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2025-22449 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-22449 - OSV: https://osv.dev/vulnerability/CVE-2025-22449 --- From sbomify Insights: https://insights.sbomify.com/CVE-2025-22449/ Summaries are generated and may contain mistakes; the official description above is the record.