{"answers":{"affected":"3 open source packages ship an affected version, including github.com/mattermost/mattermost-server/v6 and mattermost. It affects 1 product.","exploited":"There is no known exploitation of CVE-2022-3257 in the wild and no public exploit code.","fix":"Upgrade github.com/mattermost/mattermost-server/v6 to 7.2.0 or later.","what":"CVE-2022-3257 is a low-severity denial of service vulnerability in Mattermost Mattermost Server, published on 23 Sep 2022. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2022-3257 and fix it if it is affected.\n\nWhat it is: CVE-2022-3257 is a low-severity denial of service vulnerability in Mattermost Mattermost Server, published on 23 Sep 2022. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2022-3257 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/mattermost/mattermost-server/v6 (Go): affected from 7.1.0; fixed in 7.2.0\n- github.com/mattermost/mattermost-server/v6 (Go): affected from 7.1.0; fixed in 7.2.0\n- mattermost (Bitnami): affected all versions; fixed in 7.2.0\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-2022-3257/ (Markdown: https://insights.sbomify.com/CVE-2022-3257/index.md)","id":"CVE-2022-3257","markdown":"https://insights.sbomify.com/CVE-2022-3257/index.md","name":"CVE-2022-3257","record":{"aliases":["BIT-mattermost-2022-3257","GHSA-m7w4-q5vg-5xfp"],"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":"Authenticated users can cause server-side denial of service by uploading a crafted GIF file, exhausting resources during processing.","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":3.1,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-434","name":"Unrestricted Upload of File with Dangerous Type"},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"Mattermost version 7.1.x and earlier fails to sufficiently process a specifically crafted GIF file when it is uploaded while drafting a post, which allows authenticated users to cause resource exhaustion while processing the file, resulting in server-side Denial of Service.","ecosystems":["Bitnami","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":"Server-side Denial of Service while processing a specifically crafted GIF file","id":"CVE-2022-3257","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"mattermost:mattermost_server","products":["mattermost:mattermost_server"],"type":"denial_of_service","year":"2022"},"n_packages":3,"n_references":2,"next":{"headline":"Missing authorization in Workforce Access","id":"CVE-2022-3258"},"packages":[{"ecosystem":"Bitnami","fixed":["7.2.0"],"introduced":["0"],"last_affected":[],"package":"mattermost","purl":"pkg:bitnami/mattermost","source":"BIT-mattermost-2022-3257"},{"ecosystem":"Go","fixed":["7.2.0"],"introduced":["7.1.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server/v6","purl":null,"source":"GHSA-m7w4-q5vg-5xfp"},{"ecosystem":"Go","fixed":["7.2.0"],"introduced":["7.1.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server/v6","purl":"pkg:golang/github.com/mattermost/mattermost-server/v6","source":"GHSA-m7w4-q5vg-5xfp"}],"prev":{"headline":"Use After Free in vim/vim","id":"CVE-2022-3256"},"products":["Mattermost"],"published":"2022-09-23","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":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"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":"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":"2024-12-06","vendors":["Mattermost"]},"summary":"Authenticated users can cause server-side denial of service by uploading a crafted GIF file, exhausting resources during processing.","url":"https://insights.sbomify.com/CVE-2022-3257/"}