{"answers":{"affected":"9 open source packages ship an affected version, including github.com/mattermost/mattermost-server. It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-4183 in the wild and no public exploit code.","fix":"Upgrade github.com/mattermost/mattermost-server to a fixed version for your release line: 8.1.12, 8.1.12+incompatible, 9.4.5+incompatible or 9.5.3+incompatible.","what":"CVE-2024-4183 is a medium-severity denial of service vulnerability in Mattermost Mattermost Server, published on 26 Apr 2024. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2024-4183 and fix it if it is affected.\n\nWhat it is: CVE-2024-4183 is a medium-severity denial of service vulnerability in Mattermost Mattermost Server, published on 26 Apr 2024. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2024-4183 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/mattermost/mattermost-server (Go): affected from 8.1.0; fixed in 8.1.12\n- github.com/mattermost/mattermost-server (Go): affected from 8.1.0; fixed in 8.1.12\n- github.com/mattermost/mattermost-server (Go): affected from 8.1.0+incompatible; fixed in 8.1.12+incompatible, 9.4.5+incompatible, 9.5.3+incompatible, 9.6.1+incompatible\n- github.com/mattermost/mattermost-server (Go): affected from 9.4.0; fixed in 9.4.5\n- github.com/mattermost/mattermost-server (Go): affected from 9.4.0; fixed in 9.4.5\n- github.com/mattermost/mattermost-server (Go): affected from 9.5.0; fixed in 9.5.3\n- github.com/mattermost/mattermost-server (Go): affected from 9.5.0; fixed in 9.5.3\n- github.com/mattermost/mattermost-server (Go): affected from 9.6.0-rc1; fixed in 9.6.1\n- github.com/mattermost/mattermost-server (Go): affected from 9.6.0-rc1; fixed in 9.6.1\n\nTask:\n1. 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.\n2. 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.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2024-4183/ (Markdown: https://insights.sbomify.com/CVE-2024-4183/index.md)","id":"CVE-2024-4183","markdown":"https://insights.sbomify.com/CVE-2024-4183/index.md","name":"CVE-2024-4183","record":{"aliases":["GHSA-wj37-mpq9-xrcm","GO-2024-2798"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Mattermost chat platform","requires_auth":"low_privilege","summary":"An authenticated attacker can crash the Mattermost server by flooding the sessions table via repeated API requests, requiring an upgrade to patched versions.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Mattermost","cpe":[{"product":"mattermost_server","vendor":"mattermost"}],"cvss":{"score":4.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"Mattermost versions 8.1.x before 8.1.12, 9.6.x before 9.6.1, 9.5.x before 9.5.3, 9.4.x before 9.4.5 fail to limit the number of active sessions, which allows an authenticated attacker to crash the server via repeated requests to the getSessions API after flooding the sessions table.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Mattermost fails to limit the number of active sessions","id":"CVE-2024-4183","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":"mattermost:mattermost_server","products":["mattermost:mattermost_server"],"type":"denial_of_service","year":"2024"},"n_packages":9,"n_references":1,"next":{"headline":"Multiple XXE sinks in ALM archive post-build step in OpenText Application Automation Tools","id":"CVE-2024-4184"},"packages":[{"ecosystem":"Go","fixed":["8.1.12"],"introduced":["8.1.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":null,"source":"GHSA-wj37-mpq9-xrcm"},{"ecosystem":"Go","fixed":["8.1.12"],"introduced":["8.1.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GHSA-wj37-mpq9-xrcm"},{"ecosystem":"Go","fixed":["8.1.12+incompatible","9.4.5+incompatible","9.5.3+incompatible","9.6.1+incompatible"],"introduced":["8.1.0+incompatible","9.4.0+incompatible","9.5.0+incompatible","9.6.0-rc1+incompatible"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GO-2024-2798"},{"ecosystem":"Go","fixed":["9.4.5"],"introduced":["9.4.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":null,"source":"GHSA-wj37-mpq9-xrcm"},{"ecosystem":"Go","fixed":["9.4.5"],"introduced":["9.4.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GHSA-wj37-mpq9-xrcm"},{"ecosystem":"Go","fixed":["9.5.3"],"introduced":["9.5.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":null,"source":"GHSA-wj37-mpq9-xrcm"},{"ecosystem":"Go","fixed":["9.5.3"],"introduced":["9.5.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GHSA-wj37-mpq9-xrcm"},{"ecosystem":"Go","fixed":["9.6.1"],"introduced":["9.6.0-rc1"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":null,"source":"GHSA-wj37-mpq9-xrcm"},{"ecosystem":"Go","fixed":["9.6.1"],"introduced":["9.6.0-rc1"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GHSA-wj37-mpq9-xrcm"}],"prev":{"headline":"Mattermost crashes web clients via a malformed custom status","id":"CVE-2024-4182"},"products":["Mattermost"],"published":"2024-04-26","related":[{"cvss_score":9.9,"headline":"Account takeover on OAuth/OpenID-enabled servers","id":"CVE-2025-12419","kev_date_added":null,"published":"2025-11-27"},{"cvss_score":9.9,"headline":"Account Takeover via Code Exchange Endpoint","id":"CVE-2025-12421","kev_date_added":null,"published":"2025-11-27"},{"cvss_score":9.9,"headline":"Path Traversal Leading to RCE by Any Authenticated Mattermost User","id":"CVE-2025-4981","kev_date_added":null,"published":"2025-06-20"},{"cvss_score":9.9,"headline":"Arbitrary file read via block duplication in Mattermost Boards","id":"CVE-2025-20051","kev_date_added":null,"published":"2025-02-24"},{"cvss_score":9.9,"headline":"Arbitrary file read in Mattermost Boards via import \u0026 export board archive","id":"CVE-2025-25279","kev_date_added":null,"published":"2025-02-24"},{"cvss_score":9.8,"headline":"Mattermost Server: Insufficient Password-Reset Link Invalidation","id":"CVE-2016-11074","kev_date_added":null,"published":"2020-06-19"},{"cvss_score":9.8,"headline":"Mattermost Server allows attackers to gain privileges by accessing unintended API endpoints with users' credentials","id":"CVE-2017-18885","kev_date_added":null,"published":"2020-06-19"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-08-01","vendors":["Mattermost"]},"summary":"An authenticated attacker can crash the Mattermost server by flooding the sessions table via repeated API requests, requiring an upgrade to patched versions.","url":"https://insights.sbomify.com/CVE-2024-4183/"}