{"answers":{"affected":"21 open source packages ship an affected version, including github.com/mattermost/mattermost/server/v8, github.com/mattermost/mattermost-plugin-playbooks and github.com/mattermost/mattermost-server. It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-35965 in the wild and no public exploit code.","fix":"Upgrade github.com/mattermost/mattermost/server/v8 to 8.0.0-20250218121836-2b5275d87136 or later.","what":"CVE-2025-35965 is a medium-severity denial of service vulnerability in Mattermost Mattermost Server, published on 24 Apr 2025. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-35965 and fix it if it is affected.\n\nWhat it is: CVE-2025-35965 is a medium-severity denial of service vulnerability in Mattermost Mattermost Server, published on 24 Apr 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-2025-35965 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/mattermost/mattermost/server/v8 (Go): affected all versions; no fix listed\n- github.com/mattermost/mattermost/server/v8 (Go): affected all versions; fixed in 8.0.0-20250218121836-2b5275d87136\n- github.com/mattermost/mattermost/server/v8 (Go): affected all versions; fixed in 8.0.0-20250218121836-2b5275d87136\n- github.com/mattermost/mattermost/server/v8 (Go): affected all versions; fixed in 8.0.0-20250218121836-2b5275d87136\n- github.com/mattermost/mattermost/server/v8 (Go): affected from 10.4.0; no fix listed\n- github.com/mattermost/mattermost/server/v8 (Go): affected from 10.4.0; no fix listed\n- github.com/mattermost/mattermost/server/v8 (Go): affected from 10.5.0; no fix listed\n- github.com/mattermost/mattermost/server/v8 (Go): affected from 10.5.0; no fix listed\n- github.com/mattermost/mattermost/server/v8 (Go): affected from 9.11.0; no fix listed\n- github.com/mattermost/mattermost/server/v8 (Go): affected from 9.11.0; no fix listed\n- github.com/mattermost/mattermost-plugin-playbooks (Go): affected all versions; no fix listed\n- github.com/mattermost/mattermost-plugin-playbooks (Go): affected all versions; fixed in 1.41.0\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-2025-35965/ (Markdown: https://insights.sbomify.com/CVE-2025-35965/index.md)","id":"CVE-2025-35965","markdown":"https://insights.sbomify.com/CVE-2025-35965/index.md","name":"CVE-2025-35965","record":{"aliases":["GHSA-689c-xq7x-xjwf","GO-2025-3643"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Mattermost collaboration platform","requires_auth":"low_privilege","summary":"An attacker can cause a denial of service in Mattermost by submitting excessive task actions via the GraphQL API, overloading the server.","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":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"Mattermost versions 10.4.x \u003c= 10.4.2, 10.5.x \u003c= 10.5.0, 9.11.x \u003c= 9.11.10 fail to validate the uniqueness and quantity of task actions within the UpdateRunTaskActions GraphQL operation, which allows an attacker to create task items containing an excessive number of actions triggered by specific posts, overloading the server and leading to a denial-of-service (DoS) condition.","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":"DoS in Mattermost Playbooks via Excessive Task Actions","id":"CVE-2025-35965","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":"mattermost:mattermost_server","products":["mattermost:mattermost_server"],"type":"denial_of_service","year":"2025"},"n_packages":21,"n_references":1,"next":{"headline":"Null dereference in Comdb2","id":"CVE-2025-35966"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost-plugin-playbooks","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-playbooks","source":"GO-2025-3643"},{"ecosystem":"Go","fixed":["1.41.0"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost-plugin-playbooks","purl":null,"source":"GHSA-689c-xq7x-xjwf"},{"ecosystem":"Go","fixed":["1.41.0"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost-plugin-playbooks","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-playbooks","source":"GHSA-689c-xq7x-xjwf"},{"ecosystem":"Go","fixed":["1.41.0"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost-plugin-playbooks","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-playbooks","source":"GO-2025-3643"},{"ecosystem":"Go","fixed":[],"introduced":["2.0.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-plugin-playbooks","purl":null,"source":"GHSA-689c-xq7x-xjwf"},{"ecosystem":"Go","fixed":[],"introduced":["2.0.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-plugin-playbooks","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-playbooks","source":"GHSA-689c-xq7x-xjwf"},{"ecosystem":"Go","fixed":[],"introduced":["10.4.0+incompatible"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GO-2025-3643"},{"ecosystem":"Go","fixed":[],"introduced":["10.5.0+incompatible"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GO-2025-3643"},{"ecosystem":"Go","fixed":[],"introduced":["9.11.0+incompatible"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GO-2025-3643"},{"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-2025-3643"},{"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-2025-3643"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost/server/v8","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8","source":"GO-2025-3643"},{"ecosystem":"Go","fixed":["8.0.0-20250218121836-2b5275d87136"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost/server/v8","purl":null,"source":"GHSA-689c-xq7x-xjwf"},{"ecosystem":"Go","fixed":["8.0.0-20250218121836-2b5275d87136"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost/server/v8","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8","source":"GHSA-689c-xq7x-xjwf"},{"ecosystem":"Go","fixed":["8.0.0-20250218121836-2b5275d87136"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost/server/v8","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8","source":"GO-2025-3643"},{"ecosystem":"Go","fixed":[],"introduced":["10.4.0"],"last_affected":[],"package":"github.com/mattermost/mattermost/server/v8","purl":null,"source":"GHSA-689c-xq7x-xjwf"},{"ecosystem":"Go","fixed":[],"introduced":["10.4.0"],"last_affected":[],"package":"github.com/mattermost/mattermost/server/v8","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8","source":"GHSA-689c-xq7x-xjwf"},{"ecosystem":"Go","fixed":[],"introduced":["10.5.0"],"last_affected":[],"package":"github.com/mattermost/mattermost/server/v8","purl":null,"source":"GHSA-689c-xq7x-xjwf"},{"ecosystem":"Go","fixed":[],"introduced":["10.5.0"],"last_affected":[],"package":"github.com/mattermost/mattermost/server/v8","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8","source":"GHSA-689c-xq7x-xjwf"},{"ecosystem":"Go","fixed":[],"introduced":["9.11.0"],"last_affected":[],"package":"github.com/mattermost/mattermost/server/v8","purl":null,"source":"GHSA-689c-xq7x-xjwf"},{"ecosystem":"Go","fixed":[],"introduced":["9.11.0"],"last_affected":[],"package":"github.com/mattermost/mattermost/server/v8","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8","source":"GHSA-689c-xq7x-xjwf"}],"prev":{"headline":"Denial of service in Intel(R) PROSet/Wireless WiFi Software for Windows","id":"CVE-2025-35963"},"products":["Mattermost"],"published":"2025-04-24","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":"2025-04-24","vendors":["Mattermost"]},"summary":"An attacker can cause a denial of service in Mattermost by submitting excessive task actions via the GraphQL API, overloading the server.","url":"https://insights.sbomify.com/CVE-2025-35965/"}