{"answers":{"affected":"6 open source packages ship an affected version, including github.com/mattermost/mattermost/server/v8 and github.com/mattermost/mattermost-server/v6. It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-5196 in the wild and no public exploit code.","fix":"Upgrade github.com/mattermost/mattermost/server/v8 to a fixed version for your release line: 8.0.2 or 8.1.1.","what":"CVE-2023-5196 is a medium-severity denial of service vulnerability in Mattermost Mattermost, published on 29 Sep 2023. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-5196 and fix it if it is affected.\n\nWhat it is: CVE-2023-5196 is a medium-severity denial of service vulnerability in Mattermost Mattermost, published on 29 Sep 2023. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-5196 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/mattermost/mattermost/server/v8 (Go): affected from 8.0.0; fixed in 8.0.2\n- github.com/mattermost/mattermost/server/v8 (Go): affected from 8.0.0; fixed in 8.0.2\n- github.com/mattermost/mattermost/server/v8 (Go): affected from 8.1.0; fixed in 8.1.1\n- github.com/mattermost/mattermost/server/v8 (Go): affected from 8.1.0; fixed in 8.1.1\n- github.com/mattermost/mattermost-server/v6 (Go): affected all versions; fixed in 7.8.10\n- github.com/mattermost/mattermost-server/v6 (Go): affected all versions; fixed in 7.8.10\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-2023-5196/ (Markdown: https://insights.sbomify.com/CVE-2023-5196/index.md)","id":"CVE-2023-5196","markdown":"https://insights.sbomify.com/CVE-2023-5196/index.md","name":"CVE-2023-5196","record":{"aliases":["GHSA-33r7-wjfc-7w98"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Mattermost chat platform","requires_auth":"low_privilege","summary":"An attacker can cause a denial of service by sending excessively long notification properties, consuming server resources.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Mattermost","cpe":[{"product":"mattermost","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-400","name":"Uncontrolled Resource Consumption"}],"description":"Mattermost fails to enforce character limits in all possible notification props allowing an attacker to send a really long value for a notification_prop resulting in the server consuming an abnormal quantity of computing resources and possibly becoming temporarily unavailable for its users.","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 via Channel Notification Properties","id":"CVE-2023-5196","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":"mattermost:mattermost","products":["mattermost:mattermost"],"type":"denial_of_service","year":"2023"},"n_packages":6,"n_references":1,"next":{"headline":"Use-after-free in Linux kernel's netfilter: nf_tables component","id":"CVE-2023-5197"},"packages":[{"ecosystem":"Go","fixed":["7.8.10"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server/v6","purl":null,"source":"GHSA-33r7-wjfc-7w98"},{"ecosystem":"Go","fixed":["7.8.10"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server/v6","purl":"pkg:golang/github.com/mattermost/mattermost-server/v6","source":"GHSA-33r7-wjfc-7w98"},{"ecosystem":"Go","fixed":["8.0.2"],"introduced":["8.0.0"],"last_affected":[],"package":"github.com/mattermost/mattermost/server/v8","purl":null,"source":"GHSA-33r7-wjfc-7w98"},{"ecosystem":"Go","fixed":["8.0.2"],"introduced":["8.0.0"],"last_affected":[],"package":"github.com/mattermost/mattermost/server/v8","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8","source":"GHSA-33r7-wjfc-7w98"},{"ecosystem":"Go","fixed":["8.1.1"],"introduced":["8.1.0"],"last_affected":[],"package":"github.com/mattermost/mattermost/server/v8","purl":null,"source":"GHSA-33r7-wjfc-7w98"},{"ecosystem":"Go","fixed":["8.1.1"],"introduced":["8.1.0"],"last_affected":[],"package":"github.com/mattermost/mattermost/server/v8","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8","source":"GHSA-33r7-wjfc-7w98"}],"prev":{"headline":"A team member can soft delete other teams that they are not part of","id":"CVE-2023-5195"},"products":["Mattermost"],"published":"2023-09-29","related":[{"cvss_score":9.1,"headline":"Path traversal in n/a","id":"CVE-2019-20851","kev_date_added":null,"published":"2020-06-19"},{"cvss_score":8.7,"headline":"Malicious remote can add users to arbitrary teams and channels","id":"CVE-2024-39274","kev_date_added":null,"published":"2024-08-01"},{"cvss_score":8.7,"headline":"Malicious remote can invite itself to an arbitrary local channel","id":"CVE-2024-39777","kev_date_added":null,"published":"2024-08-01"},{"cvss_score":8.1,"headline":"Timing attack during remote cluster token comparison when shared channels are enabled","id":"CVE-2024-39830","kev_date_added":null,"published":"2024-07-03"},{"cvss_score":8.1,"headline":"Lack of server certificate validation in websockets connection","id":"CVE-2023-3615","kev_date_added":null,"published":"2023-07-17"},{"cvss_score":7.5,"headline":"Information disclosure in n/a","id":"CVE-2020-13891","kev_date_added":null,"published":"2020-06-26"},{"cvss_score":7.4,"headline":"Existing local user overwritten by malicious remote","id":"CVE-2024-36492","kev_date_added":null,"published":"2024-08-01"}],"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":"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":"2024-09-20","vendors":["Mattermost"]},"summary":"An attacker can cause a denial of service by sending excessively long notification properties, consuming server resources.","url":"https://insights.sbomify.com/CVE-2023-5196/"}