{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-2299 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-2299 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-2299 is a medium-severity missing authorization vulnerability in Mattermost Google Drive Plugin, published on 25 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-2299 and fix it if it is affected.\n\nWhat it is: CVE-2026-2299 is a medium-severity missing authorization vulnerability in Mattermost Google Drive Plugin, published on 25 Jun 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-2026-2299 in the wild and no public exploit code.\n\nAffected product: Mattermost Google Drive Plugin. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-2299/ (Markdown: https://insights.sbomify.com/CVE-2026-2299/index.md)","id":"CVE-2026-2299","markdown":"https://insights.sbomify.com/CVE-2026-2299/index.md","name":"CVE-2026-2299","record":{"aliases":["GHSA-m2c6-qhf9-2xm8"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Mattermost Google Drive Plugin","requires_auth":"low_privilege","summary":"Authenticated users can share files to unauthorized private channels and disclose membership due to missing channel validation in the Google Drive plugin.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Mattermost","cpe":[{"product":"google_drive","vendor":"mattermost"}],"cvss":{"score":4.2,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"The Mattermost Google Drive plugin before version 1.1.0 fails to validate channel membership in the file creation endpoint, allowing authenticated users with a connected Google account to share Google Drive files to unauthorized private channels and disclose private channel membership.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Improper Access Control in Mattermost Google Drive Plugin File Creation Endpoint","id":"CVE-2026-2299","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"BJ Lazy Load \u003c= 1.0.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via Custom HTML Block","id":"CVE-2026-2300"},"packages":[],"prev":{"headline":"Command injection in Marketing Cloud Engagement","id":"CVE-2026-2298"},"products":["Mattermost Google Drive Plugin"],"published":"2026-06-25","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-06-26","vendors":["Mattermost"]},"summary":"Authenticated users can share files to unauthorized private channels and disclose membership due to missing channel validation in the Google Drive plugin.","url":"https://insights.sbomify.com/CVE-2026-2299/"}