{"answers":{"affected":"17 open source packages ship an affected version, including github.com/mattermost/mattermost-server, github.com/mattermost/mattermost-server/v5 and github.com/mattermost/mattermost-server/v6. It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-14350 in the wild and no public exploit code.","fix":"Upgrade github.com/mattermost/mattermost-server to 5.3.2-0.20251209134645-761e56bb11cc or later.","what":"CVE-2025-14350 is a medium-severity vulnerability in Mattermost Mattermost Server, published on 16 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-14350 and fix it if it is affected.\n\nWhat it is: CVE-2025-14350 is a medium-severity vulnerability in Mattermost Mattermost Server, published on 16 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-14350 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/mattermost/mattermost-server (Go): affected all versions; no fix listed\n- github.com/mattermost/mattermost-server (Go): affected all versions; fixed in 5.3.2-0.20251209134645-761e56bb11cc\n- github.com/mattermost/mattermost-server (Go): affected all versions; fixed in 5.3.2-0.20251209134645-761e56bb11cc\n- github.com/mattermost/mattermost-server (Go): affected from 10.11.0; no fix listed\n- github.com/mattermost/mattermost-server (Go): affected from 10.11.0; no fix listed\n- github.com/mattermost/mattermost-server (Go): affected from 10.11.0+incompatible; no fix listed\n- github.com/mattermost/mattermost-server (Go): affected from 11.1.0; no fix listed\n- github.com/mattermost/mattermost-server (Go): affected from 11.1.0; no fix listed\n- github.com/mattermost/mattermost-server (Go): affected from 11.1.0+incompatible; no fix listed\n- github.com/mattermost/mattermost-server (Go): affected from 11.2.0; no fix listed\n- github.com/mattermost/mattermost-server (Go): affected from 11.2.0; no fix listed\n- github.com/mattermost/mattermost-server (Go): affected from 11.2.0+incompatible; no fix listed\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-2025-14350/ (Markdown: https://insights.sbomify.com/CVE-2025-14350/index.md)","id":"CVE-2025-14350","markdown":"https://insights.sbomify.com/CVE-2025-14350/index.md","name":"CVE-2025-14350","record":{"aliases":["GHSA-57cc-2pf4-mhmx","GO-2026-4521"],"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 discover private team names and URLs by observing API responses to channel mentions, exposing sensitive organizational structure.","user_interaction":"not_required","vuln_class":"information_disclosure"},"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:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"Mattermost versions 11.1.x \u003c= 11.1.2, 10.11.x \u003c= 10.11.9, 11.2.x \u003c= 11.2.1 fail to properly validate team membership when processing channel mentions which allows authenticated users to determine the existence of teams and their URL names via posting channel shortlinks and observing the channel_mentions property in the API response. Mattermost Advisory ID: MMSA-2025-00563","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":"Information disclosure via channel mentions in posts","id":"CVE-2025-14350","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":"mattermost:mattermost_server","products":["mattermost:mattermost_server"],"type":"information_disclosure","year":"2025"},"n_packages":17,"n_references":1,"next":{"headline":"Custom Fonts – Host Your Fonts Locally \u003c= 2.1.16 - Missing Authorization to Unauthenticated Font Deletion","id":"CVE-2025-14351"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GO-2026-4521"},{"ecosystem":"Go","fixed":["5.3.2-0.20251209134645-761e56bb11cc"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":null,"source":"GHSA-57cc-2pf4-mhmx"},{"ecosystem":"Go","fixed":["5.3.2-0.20251209134645-761e56bb11cc"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GHSA-57cc-2pf4-mhmx"},{"ecosystem":"Go","fixed":[],"introduced":["10.11.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":null,"source":"GHSA-57cc-2pf4-mhmx"},{"ecosystem":"Go","fixed":[],"introduced":["10.11.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GHSA-57cc-2pf4-mhmx"},{"ecosystem":"Go","fixed":[],"introduced":["10.11.0+incompatible"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GO-2026-4521"},{"ecosystem":"Go","fixed":[],"introduced":["11.1.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":null,"source":"GHSA-57cc-2pf4-mhmx"},{"ecosystem":"Go","fixed":[],"introduced":["11.1.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GHSA-57cc-2pf4-mhmx"},{"ecosystem":"Go","fixed":[],"introduced":["11.1.0+incompatible"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GO-2026-4521"},{"ecosystem":"Go","fixed":[],"introduced":["11.2.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":null,"source":"GHSA-57cc-2pf4-mhmx"},{"ecosystem":"Go","fixed":[],"introduced":["11.2.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GHSA-57cc-2pf4-mhmx"},{"ecosystem":"Go","fixed":[],"introduced":["11.2.0+incompatible"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GO-2026-4521"},{"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-2026-4521"},{"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-2026-4521"},{"ecosystem":"Go","fixed":["8.0.0-20251209134645-761e56bb11cc"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost/server/v8","purl":null,"source":"GHSA-57cc-2pf4-mhmx"},{"ecosystem":"Go","fixed":["8.0.0-20251209134645-761e56bb11cc"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost/server/v8","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8","source":"GHSA-57cc-2pf4-mhmx"},{"ecosystem":"Go","fixed":["8.0.0-20251209134645-761e56bb11cc"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost/server/v8","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8","source":"GO-2026-4521"}],"prev":{"headline":"Business Logic Error in Universal Software's FlexCity/Kiosk","id":"CVE-2025-14349"},"products":["Mattermost"],"published":"2026-02-16","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":"2026-02-17","vendors":["Mattermost"]},"summary":"Authenticated users can discover private team names and URLs by observing API responses to channel mentions, exposing sensitive organizational structure.","url":"https://insights.sbomify.com/CVE-2025-14350/"}