{"answers":{"affected":"3 open source packages ship an affected version, including github.com/mattermost/mattermost-plugin-confluence. It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-53857 in the wild and no public exploit code.","fix":"Upgrade github.com/mattermost/mattermost-plugin-confluence to 1.5.0 or later.","what":"CVE-2025-53857 is a low-severity missing authorization vulnerability in Mattermost Confluence Plugin, published on 11 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-53857 and fix it if it is affected.\n\nWhat it is: CVE-2025-53857 is a low-severity missing authorization vulnerability in Mattermost Confluence Plugin, published on 11 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-53857 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/mattermost/mattermost-plugin-confluence (Go): affected all versions; fixed in 1.5.0\n- github.com/mattermost/mattermost-plugin-confluence (Go): affected all versions; fixed in 1.5.0\n- github.com/mattermost/mattermost-plugin-confluence (Go): affected all versions; fixed in 1.5.0\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-2025-53857/ (Markdown: https://insights.sbomify.com/CVE-2025-53857/index.md)","id":"CVE-2025-53857","markdown":"https://insights.sbomify.com/CVE-2025-53857/index.md","name":"CVE-2025-53857","record":{"aliases":["GHSA-42m6-5vm7-fjv2","GO-2025-3864"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Mattermost Confluence Plugin","requires_auth":"none","summary":"Attackers can read channel subscription details without proper access via an unauthenticated API endpoint in the Mattermost Confluence Plugin.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Mattermost","cpe":[{"product":"confluence","vendor":"mattermost"}],"cvss":{"score":3.7,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"Mattermost Confluence Plugin version \u003c1.5.0 fails to check the access of the user to the channel which allows attackers to get channel subscription details without proper access to the channel via API call to the GET autocomplete/GetChannelSubscriptions endpoint.","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":"Lack of Authorization on Get Channel Subscriptions for Autocomplete in Mattermost Confluence Plugin","id":"CVE-2025-53857","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"missing_authorization","year":"2025"},"n_packages":3,"n_references":1,"next":{"headline":"Cross-site scripting in ChatLuck","id":"CVE-2025-53858"},"packages":[{"ecosystem":"Go","fixed":["1.5.0"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost-plugin-confluence","purl":null,"source":"GHSA-42m6-5vm7-fjv2"},{"ecosystem":"Go","fixed":["1.5.0"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost-plugin-confluence","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-confluence","source":"GHSA-42m6-5vm7-fjv2"},{"ecosystem":"Go","fixed":["1.5.0"],"introduced":["0"],"last_affected":[],"package":"github.com/mattermost/mattermost-plugin-confluence","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-confluence","source":"GO-2025-3864"}],"prev":{"headline":"TMM vulnerability","id":"CVE-2025-53856"},"products":["Mattermost Confluence Plugin"],"published":"2025-08-11","related":[{"cvss_score":7.7,"headline":"Cross-Site Scripting (XSS) via Unescaped Display Names in Mattermost Confluence Plugin OAuth2 Flow","id":"CVE-2025-13523","kev_date_added":null,"published":"2026-02-06"},{"cvss_score":7.5,"headline":"Unexpected input to Update Channel Subscription endpoint causes DoS in Mattermost Confluence Plugin","id":"CVE-2025-52931","kev_date_added":null,"published":"2025-08-11"},{"cvss_score":7.5,"headline":"Unexpected input to Create Channel Subscription endpoint causes DoS in Mattermost Confluence Plugin","id":"CVE-2025-54525","kev_date_added":null,"published":"2025-08-11"},{"cvss_score":7.2,"headline":"Unauthenticated Channel Subscription Creation in Mattermost Confluence Plugin","id":"CVE-2025-44004","kev_date_added":null,"published":"2025-08-11"},{"cvss_score":7.2,"headline":"Unauthenticated Channel Subscription Edit in Mattermost Confluence Plugin","id":"CVE-2025-54478","kev_date_added":null,"published":"2025-08-11"},{"cvss_score":6.4,"headline":"Unauthorized Subscription Edit to Confluence Space in Mattermost Confluence Plugin","id":"CVE-2025-48731","kev_date_added":null,"published":"2025-08-11"},{"cvss_score":5.9,"headline":"Unexpected Input to Server Webhook endpoint Causes DoS in Mattermost Confluence Plugin","id":"CVE-2025-53514","kev_date_added":null,"published":"2025-08-11"}],"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":"2025-08-11","vendors":["Mattermost"]},"summary":"Attackers can read channel subscription details without proper access via an unauthenticated API endpoint in the Mattermost Confluence Plugin.","url":"https://insights.sbomify.com/CVE-2025-53857/"}