# CVE-2024-48872: Bypass of "Max failed attempts" restriction via race condition > Attackers can bypass login attempt limits by exploiting a race condition, enabling brute-force attacks against user accounts. - **Severity:** Medium 4.8 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 16 Dec 2024 - **Updated:** 16 Dec 2024 - **Also known as:** GHSA-826h-p4c3-477p, GO-2024-3338 ## What is CVE-2024-48872? CVE-2024-48872 is a medium-severity vulnerability in Mattermost Mattermost Server, published on 16 Dec 2024. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description Mattermost versions 10.1.x <= 10.1.2, 10.0.x <= 10.0.2, 9.11.x <= 9.11.4, and 9.5.x <= 9.5.12 fail to prevent concurrently checking and updating the failed login attempts. which allows an attacker to bypass of "Max failed attempts" restriction and send a big number of login attempts before being blocked via simultaneously sending multiple login requests Weakness: CWE-362 (Concurrent Execution using Shared Resource with Improper Synchronization) ## Which versions are affected by CVE-2024-48872? 12 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 | None | | `github.com/mattermost/mattermost/server/v8` | Go | From 10.0.0 | 10.0.3 | | `github.com/mattermost/mattermost/server/v8` | Go | From 10.0.0 | 10.0.3 | | `github.com/mattermost/mattermost/server/v8` | Go | From 10.1.0 | 10.1.3 | | `github.com/mattermost/mattermost/server/v8` | Go | From 10.1.0 | 10.1.3 | | `github.com/mattermost/mattermost/server/v8` | Go | From 9.11.0 | 9.11.5 | | `github.com/mattermost/mattermost/server/v8` | Go | From 9.11.0 | 9.11.5 | | `github.com/mattermost/mattermost/server/v8` | Go | From 9.5.0 | 9.5.13 | | `github.com/mattermost/mattermost/server/v8` | Go | From 9.5.0 | 9.5.13 | | `github.com/mattermost/mattermost-server` | Go | From 9.5.0+incompatible | 9.5.13+incompatible, 9.11.5+incompatible, 10.0.3+incompatible, 10.1.3+incompatible | | `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-2024-48872? Upgrade github.com/mattermost/mattermost/server/v8 to a fixed version for your release line: 10.0.3, 10.1.3, 9.11.5 or 9.5.13. ## Is CVE-2024-48872 being exploited? There is no known exploitation of CVE-2024-48872 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-2024-48872 and fix it if it is affected. What it is: CVE-2024-48872 is a medium-severity vulnerability in Mattermost Mattermost Server, published on 16 Dec 2024. An attacker can exploit it over the internet without logging in, with no action from the victim. Exploitation: There is no known exploitation of CVE-2024-48872 in the wild and no public exploit code. Affected packages and fixed versions: - github.com/mattermost/mattermost/server/v8 (Go): affected all versions; no fix listed - github.com/mattermost/mattermost/server/v8 (Go): affected from 10.0.0; fixed in 10.0.3 - github.com/mattermost/mattermost/server/v8 (Go): affected from 10.0.0; fixed in 10.0.3 - github.com/mattermost/mattermost/server/v8 (Go): affected from 10.1.0; fixed in 10.1.3 - github.com/mattermost/mattermost/server/v8 (Go): affected from 10.1.0; fixed in 10.1.3 - github.com/mattermost/mattermost/server/v8 (Go): affected from 9.11.0; fixed in 9.11.5 - github.com/mattermost/mattermost/server/v8 (Go): affected from 9.11.0; fixed in 9.11.5 - github.com/mattermost/mattermost/server/v8 (Go): affected from 9.5.0; fixed in 9.5.13 - github.com/mattermost/mattermost/server/v8 (Go): affected from 9.5.0; fixed in 9.5.13 - github.com/mattermost/mattermost-server (Go): affected from 9.5.0+incompatible; fixed in 9.5.13+incompatible, 9.11.5+incompatible, 10.0.3+incompatible, 10.1.3+incompatible - 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-2024-48872/ (Markdown: https://insights.sbomify.com/CVE-2024-48872/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2024-48872 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-48872 - OSV: https://osv.dev/vulnerability/CVE-2024-48872 --- From sbomify Insights: https://insights.sbomify.com/CVE-2024-48872/ Summaries are generated and may contain mistakes; the official description above is the record.