{"answers":{"affected":"13 open source packages ship an affected version, including github.com/mattermost/mattermost-server, github.com/mattermost/mattermost-plugin-boards and github.com/mattermost/mattermost-server/v5. It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-9081 in the wild and no public exploit code.","fix":"Upgrade github.com/mattermost/mattermost-server to a fixed version for your release line: 10.5.9, 9.11.18, 9.11.18+incompatible or 10.5.9+incompatible.","what":"CVE-2025-9081 is a low-severity missing authorization vulnerability in Mattermost Mattermost Server, published on 19 Sep 2025. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-9081 and fix it if it is affected.\n\nWhat it is: CVE-2025-9081 is a low-severity missing authorization vulnerability in Mattermost Mattermost Server, published on 19 Sep 2025. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-9081 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/mattermost/mattermost-server (Go): affected from 10.5.0-rc1; fixed in 10.5.9\n- github.com/mattermost/mattermost-server (Go): affected from 10.5.0-rc1; fixed in 10.5.9\n- github.com/mattermost/mattermost-server (Go): affected from 9.11.0-rc1; fixed in 9.11.18\n- github.com/mattermost/mattermost-server (Go): affected from 9.11.0-rc1; fixed in 9.11.18\n- github.com/mattermost/mattermost-server (Go): affected from 9.11.0-rc1+incompatible; fixed in 9.11.18+incompatible, 10.5.9+incompatible\n- github.com/mattermost/mattermost-plugin-boards (Go): affected all versions; fixed in 0.0.0-20250716054606-3f3e3becfe1d\n- github.com/mattermost/mattermost-plugin-boards (Go): affected all versions; fixed in 0.0.0-20250716054606-3f3e3becfe1d\n- github.com/mattermost/mattermost-plugin-boards (Go): affected all versions; fixed in 0.0.0-20250716054606-3f3e3becfe1d\n- github.com/mattermost/mattermost-server/v5 (Go): affected all versions; no fix listed\n- github.com/mattermost/mattermost-server/v6 (Go): affected all versions; no fix listed\n- github.com/mattermost/mattermost/server/v8 (Go): affected all versions; fixed in 8.0.0-20250721095935-11c36f4d1e44\n- github.com/mattermost/mattermost/server/v8 (Go): affected all versions; fixed in 8.0.0-20250721095935-11c36f4d1e44\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-2025-9081/ (Markdown: https://insights.sbomify.com/CVE-2025-9081/index.md)","id":"CVE-2025-9081","markdown":"https://insights.sbomify.com/CVE-2025-9081/index.md","name":"CVE-2025-9081","record":{"aliases":["GHSA-f72g-52v7-mg3p","GO-2025-3978"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Mattermost collaboration platform","requires_auth":"low_privilege","summary":"Authenticated users can download any file by enumerating UUIDs due to missing access controls in the board file download endpoint.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Mattermost","cpe":[{"product":"mattermost_server","vendor":"mattermost"}],"cvss":{"score":3.1,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-639","name":"Authorization Bypass Through User-Controlled Key"}],"description":"Mattermost versions 10.5.x \u003c= 10.5.8, 9.11.x \u003c= 9.11.17 fail to properly validate access controls which allows any authenticated user to download sensitive files via board file download endpoint using UUID enumeration","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":"IDOR in board file download allows any user to download any file by UUID","id":"CVE-2025-9081","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":"mattermost:mattermost_server","products":["mattermost:mattermost_server"],"type":"missing_authorization","year":"2025"},"n_packages":13,"n_references":1,"next":{"headline":"WPBITS Addons For Elementor \u003c= 1.8 - Authenticated (Contributor+) Stored Cross-Site Scripting","id":"CVE-2025-9082"},"packages":[{"ecosystem":"Go","fixed":["0.0.0-20250716054606-3f3e3becfe1d"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost-plugin-boards","purl":null,"source":"GHSA-f72g-52v7-mg3p"},{"ecosystem":"Go","fixed":["0.0.0-20250716054606-3f3e3becfe1d"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost-plugin-boards","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-boards","source":"GHSA-f72g-52v7-mg3p"},{"ecosystem":"Go","fixed":["0.0.0-20250716054606-3f3e3becfe1d"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost-plugin-boards","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-boards","source":"GO-2025-3978"},{"ecosystem":"Go","fixed":["10.5.9"],"introduced":["10.5.0-rc1"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":null,"source":"GHSA-f72g-52v7-mg3p"},{"ecosystem":"Go","fixed":["10.5.9"],"introduced":["10.5.0-rc1"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GHSA-f72g-52v7-mg3p"},{"ecosystem":"Go","fixed":["9.11.18"],"introduced":["9.11.0-rc1"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":null,"source":"GHSA-f72g-52v7-mg3p"},{"ecosystem":"Go","fixed":["9.11.18"],"introduced":["9.11.0-rc1"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GHSA-f72g-52v7-mg3p"},{"ecosystem":"Go","fixed":["9.11.18+incompatible","10.5.9+incompatible"],"introduced":["9.11.0-rc1+incompatible","10.5.0-rc1+incompatible"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GO-2025-3978"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server/v5","purl":"pkg:golang/github.com/mattermost/mattermost-server/v5","source":"GO-2025-3978"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server/v6","purl":"pkg:golang/github.com/mattermost/mattermost-server/v6","source":"GO-2025-3978"},{"ecosystem":"Go","fixed":["8.0.0-20250721095935-11c36f4d1e44"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost/server/v8","purl":null,"source":"GHSA-f72g-52v7-mg3p"},{"ecosystem":"Go","fixed":["8.0.0-20250721095935-11c36f4d1e44"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost/server/v8","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8","source":"GHSA-f72g-52v7-mg3p"},{"ecosystem":"Go","fixed":["8.0.0-20250721095935-11c36f4d1e44"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost/server/v8","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8","source":"GO-2025-3978"}],"prev":{"headline":"Generic Elements \u003c= 1.2.8 - Authenticated (Contributor+) Stored Cross-Site Scripting","id":"CVE-2025-9080"},"products":["Mattermost"],"published":"2025-09-19","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":"2025-09-19","vendors":["Mattermost"]},"summary":"Authenticated users can download any file by enumerating UUIDs due to missing access controls in the board file download endpoint.","url":"https://insights.sbomify.com/CVE-2025-9081/"}